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<?xml version="1.0" encoding="UTF-8" standalone="no"?><StructureDefinition xmlns="http://hl7.org/fhir">
   <id value="NHSDigital-NamingSystem-1"/>
   <meta>
      <lastUpdated value="2018-09-20T08:35:38.733+01:00"/>
   </meta>
   <url value="https://fhir.nhs.uk/STU3/StructureDefinition/NHSDigital-NamingSystem-1"/>
   <version value="1.0.0"/>
   <name value="NHSDigital-NamingSystem-1"/>
   <status value="draft"/>
   <date value="2018-09-19T10:44:43.019+01:00"/>
   <publisher value="NHS Digital"/>
   <contact>
      <name value="Interoperability Team"/>
      <telecom>
         <system value="email"/>
         <value value="interoperabilityteam@nhs.net"/>
         <use value="work"/>
      </telecom>
   </contact>
   <description value="NHSDigital-NamingSystem-1 requirements profile."/>
   <copyright value="Copyright © 2018 NHS Digital"/>
   <fhirVersion value="3.0.1"/>
   <kind value="resource"/>
   <abstract value="false"/>
   <type value="NamingSystem"/>
   <baseDefinition value="http://hl7.org/fhir/StructureDefinition/NamingSystem"/>
   <derivation value="constraint"/>
   <snapshot>
      <element id="NamingSystem">
         <path value="NamingSystem"/>
         <short value="System of unique identification"/>
         <definition value="A curated namespace that issues unique symbols within that namespace for the identification of concepts, people, devices, etc.  Represents a "System" used within the Identifier and Coding data types."/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Resource"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <constraint>
            <key value="dom-2"/>
            <severity value="error"/>
            <human value="If the resource is contained in another resource, it SHALL NOT contain nested Resources"/>
            <expression value="contained.contained.empty()"/>
            <xpath value="not(parent::f:contained and f:contained)"/>
         </constraint>
         <constraint>
            <key value="dom-1"/>
            <severity value="error"/>
            <human value="If the resource is contained in another resource, it SHALL NOT contain any narrative"/>
            <expression value="contained.text.empty()"/>
            <xpath value="not(parent::f:contained and f:text)"/>
         </constraint>
         <constraint>
            <key value="dom-4"/>
            <severity value="error"/>
            <human value="If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated"/>
            <expression value="contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()"/>
            <xpath value="not(exists(f:contained/*/f:meta/f:versionId)) and not(exists(f:contained/*/f:meta/f:lastUpdated))"/>
         </constraint>
         <constraint>
            <key value="dom-3"/>
            <severity value="error"/>
            <human value="If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource"/>
            <expression value="contained.where(('#'+id in %resource.descendants().reference).not()).empty()"/>
            <xpath value="not(exists(for $id in f:contained/*/@id return $id[not(ancestor::f:contained/parent::*/descendant::f:reference/@value=concat('#', $id))]))"/>
         </constraint>
         <constraint>
            <key value="nsd-1"/>
            <severity value="error"/>
            <human value="Root systems cannot have uuid identifiers"/>
            <expression value="kind != 'root' or uniqueId.type = 'uuid'"/>
            <xpath value="not(f:kind/@value='root' and f:uniqueId/f:type/@value='uuid')"/>
         </constraint>
         <constraint>
            <key value="nsd-3"/>
            <severity value="error"/>
            <human value="Can only have replacedBy if naming system is retired"/>
            <expression value="replacedBy.empty() or status = 'retired'"/>
            <xpath value="not(f:replacedBy) or f:status/@value='retired'"/>
         </constraint>
         <constraint>
            <key value="nsd-2"/>
            <severity value="error"/>
            <human value="Can't have more than one preferred identifier for a type"/>
            <expression value="uniqueId.where(preferred = true).select(type).isDistinct()"/>
            <xpath value="not(exists(for $type in distinct-values(f:uniqueId/f:type/@value) return if (count(f:uniqueId[f:type/@value=$type and f:preferred/@value=true()])>1) then $type else ()))"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="Entity. Role, or Act"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="N/A"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
         <mapping>
            <identity value="w5"/>
            <map value="conformance.terminology"/>
         </mapping>
      </element>
      <element id="NamingSystem.id">
         <path value="NamingSystem.id"/>
         <short value="Logical id of this artifact"/>
         <definition value="The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes."/>
         <comment value="The only time that a resource does not have an id is when it is being submitted to the server using a create operation."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Resource.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="id"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta">
         <path value="NamingSystem.meta"/>
         <short value="Metadata about the resource"/>
         <definition value="The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content may not always be associated with version changes to the resource."/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="Resource.meta"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="Meta"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.id">
         <path value="NamingSystem.meta.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.extension">
         <path value="NamingSystem.meta.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.versionId">
         <path value="NamingSystem.meta.versionId"/>
         <short value="Version specific identifier"/>
         <definition value="The version specific identifier, as it appears in the version portion of the URL. This values changes when the resource is created, updated, or deleted."/>
         <comment value="The server assigns this value, and ignores what the client specifies, except in the case that the server is imposing version integrity on updates/deletes."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Meta.versionId"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="id"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.lastUpdated">
         <path value="NamingSystem.meta.lastUpdated"/>
         <short value="When the resource version last changed"/>
         <definition value="When the resource last changed - e.g. when the version changed."/>
         <comment value="This value is always populated except when the resource is first being created. The server / resource manager sets this value; what a client provides is irrelevant."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Meta.lastUpdated"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="instant"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.profile">
         <path value="NamingSystem.meta.profile"/>
         <short value="Profiles this resource claims to conform to"/>
         <definition value="A list of profiles (references to [StructureDefinition](structuredefinition.html#) resources) that this resource claims to conform to. The URL is a reference to [StructureDefinition.url]()."/>
         <comment value="It is up to the server and/or other infrastructure of policy to determine whether/how these claims are verified and/or updated over time.  The list of profile URLs is a set."/>
         <min value="1"/>
         <max value="*"/>
         <base>
            <path value="Meta.profile"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="uri"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.security">
         <path value="NamingSystem.meta.security"/>
         <short value="Security Labels applied to this resource"/>
         <definition value="Security labels applied to this resource. These tags connect specific resources to the overall security policy and infrastructure."/>
         <comment value="The security labels can be updated without changing the stated version of the resource  The list of security labels is a set. Uniqueness is based the system/code, and version and display are ignored."/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Meta.security"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Coding"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="SecurityLabels"/>
            </extension>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
               <valueBoolean value="true"/>
            </extension>
            <strength value="extensible"/>
            <description value="Security Labels from the Healthcare Privacy and Security Classification System."/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/security-labels"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="CE/CNE/CWE subset one of the sets of component 1-3 or 4-6"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CV"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding rdfs:subClassOf dt:CDCoding"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.security.id">
         <path value="NamingSystem.meta.security.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.security.extension">
         <path value="NamingSystem.meta.security.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.security.system">
         <path value="NamingSystem.meta.security.system"/>
         <short value="Identity of the terminology system"/>
         <definition value="The identification of the code system that defines the meaning of the symbol in the code."/>
         <comment value="The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...).  OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should de-reference to some definition that establish the system clearly and unambiguously."/>
         <requirements value="Need to be unambiguous about the source of the definition of the symbol."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.system"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="uri"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.3"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./codeSystem"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.security.version">
         <path value="NamingSystem.meta.security.version"/>
         <short value="Version of the system - if relevant"/>
         <definition value="The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured. and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged."/>
         <comment value="Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.version"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.7"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./codeSystemVersion"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.security.code">
         <path value="NamingSystem.meta.security.code"/>
         <short value="Symbol in syntax defined by the system"/>
         <definition value="A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination)."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <requirements value="Need to refer to a particular code in the system."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.code"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.1"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./code"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.security.display">
         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
            <valueBoolean value="true"/>
         </extension>
         <path value="NamingSystem.meta.security.display"/>
         <short value="Representation defined by the system"/>
         <definition value="A representation of the meaning of the code in the system, following the rules of the system."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <requirements value="Need to be able to carry a human-readable meaning of the code for readers that do not know  the system."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.display"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.2 - but note this is not well followed"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CV.displayName"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.security.userSelected">
         <path value="NamingSystem.meta.security.userSelected"/>
         <short value="If this coding was chosen directly by the user"/>
         <definition value="Indicates that this coding was chosen by a user directly - i.e. off a pick list of available items (codes or displays)."/>
         <comment value="Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely."/>
         <requirements value="This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.userSelected"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="boolean"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="Sometimes implied by being first"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CD.codingRationale"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map;   fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [     fhir:source "true";     fhir:target dt:CDCoding.codingRationale\#O   ]"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.tag">
         <path value="NamingSystem.meta.tag"/>
         <short value="Tags applied to this resource"/>
         <definition value="Tags applied to this resource. Tags are intended to be used to identify and relate resources to process and workflow, and applications are not required to consider the tags when interpreting the meaning of a resource."/>
         <comment value="The tags can be updated without changing the stated version of the resource.  The list of tags is a set. Uniqueness is based the system/code, and version and display are ignored."/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Meta.tag"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Coding"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="Tags"/>
            </extension>
            <strength value="example"/>
            <description value="Codes that represent various types of tags, commonly workflow-related; e.g. "Needs review by Dr. Jones""/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/common-tags"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="CE/CNE/CWE subset one of the sets of component 1-3 or 4-6"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CV"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding rdfs:subClassOf dt:CDCoding"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.tag.id">
         <path value="NamingSystem.meta.tag.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.tag.extension">
         <path value="NamingSystem.meta.tag.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.tag.system">
         <path value="NamingSystem.meta.tag.system"/>
         <short value="Identity of the terminology system"/>
         <definition value="The identification of the code system that defines the meaning of the symbol in the code."/>
         <comment value="The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...).  OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should de-reference to some definition that establish the system clearly and unambiguously."/>
         <requirements value="Need to be unambiguous about the source of the definition of the symbol."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.system"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="uri"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.3"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./codeSystem"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.tag.version">
         <path value="NamingSystem.meta.tag.version"/>
         <short value="Version of the system - if relevant"/>
         <definition value="The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured. and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged."/>
         <comment value="Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.version"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.7"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./codeSystemVersion"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.tag.code">
         <path value="NamingSystem.meta.tag.code"/>
         <short value="Symbol in syntax defined by the system"/>
         <definition value="A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination)."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <requirements value="Need to refer to a particular code in the system."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.code"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.1"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./code"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.tag.display">
         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
            <valueBoolean value="true"/>
         </extension>
         <path value="NamingSystem.meta.tag.display"/>
         <short value="Representation defined by the system"/>
         <definition value="A representation of the meaning of the code in the system, following the rules of the system."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <requirements value="Need to be able to carry a human-readable meaning of the code for readers that do not know  the system."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.display"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.2 - but note this is not well followed"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CV.displayName"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName"/>
         </mapping>
      </element>
      <element id="NamingSystem.meta.tag.userSelected">
         <path value="NamingSystem.meta.tag.userSelected"/>
         <short value="If this coding was chosen directly by the user"/>
         <definition value="Indicates that this coding was chosen by a user directly - i.e. off a pick list of available items (codes or displays)."/>
         <comment value="Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely."/>
         <requirements value="This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.userSelected"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="boolean"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="Sometimes implied by being first"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CD.codingRationale"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map;   fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [     fhir:source "true";     fhir:target dt:CDCoding.codingRationale\#O   ]"/>
         </mapping>
      </element>
      <element id="NamingSystem.implicitRules">
         <path value="NamingSystem.implicitRules"/>
         <short value="A set of rules under which this content was created"/>
         <definition value="A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content."/>
         <comment value="Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element.   This element is labelled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Resource.implicitRules"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="uri"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isModifier value="true"/>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.language">
         <path value="NamingSystem.language"/>
         <short value="Language of the resource content"/>
         <definition value="The base language in which the resource is written."/>
         <comment value="Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies  to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource  Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute)."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Resource.language"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet">
               <valueReference>
                  <reference value="http://hl7.org/fhir/ValueSet/all-languages"/>
               </valueReference>
            </extension>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="Language"/>
            </extension>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
               <valueBoolean value="true"/>
            </extension>
            <strength value="extensible"/>
            <description value="A human language."/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/languages"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.text">
         <path value="NamingSystem.text"/>
         <short value="Text summary of the resource, for human interpretation"/>
         <definition value="A human-readable narrative that contains a summary of the resource, and may be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety."/>
         <comment value="Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied).  This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded in formation is added later."/>
         <alias value="narrative"/>
         <alias value="html"/>
         <alias value="xhtml"/>
         <alias value="display"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="DomainResource.text"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="Narrative"/>
         </type>
         <condition value="ele-1"/>
         <condition value="dom-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="Act.text?"/>
         </mapping>
      </element>
      <element id="NamingSystem.contained">
         <path value="NamingSystem.contained"/>
         <short value="Contained, inline Resources"/>
         <definition value="These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope."/>
         <comment value="This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again."/>
         <alias value="inline resources"/>
         <alias value="anonymous resources"/>
         <alias value="contained resources"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="DomainResource.contained"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Resource"/>
         </type>
         <mapping>
            <identity value="rim"/>
            <map value="Entity. Role, or Act"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.extension">
         <path value="NamingSystem.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the resource. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="DomainResource.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.modifierExtension">
         <path value="NamingSystem.modifierExtension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Extensions that cannot be ignored"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="DomainResource.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <isModifier value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.name">
         <path value="NamingSystem.name"/>
         <short value="Name for this naming system (computer friendly)"/>
         <definition value="A natural language name identifying the naming system. This name should be usable as an identifier for the module by machine processing applications such as code generation."/>
         <comment value="The name is not expected to be globally unique. The name should be a simple alpha-numeric type name to ensure that it is computable friendly. The"symbolic name" for an OID would be captured as an extension."/>
         <requirements value="Support human navigation and code generation."/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.name"/>
            <min value="1"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.status">
         <path value="NamingSystem.status"/>
         <short value="draft | active | retired | unknown"/>
         <definition value="The status of this naming system. Enables tracking the life-cycle of the content."/>
         <comment value="Allows filtering of naming systems that are appropriate for use vs. not.   This is labeled as "Is Modifier" because applications should not use a retired naming system without due consideration."/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.status"/>
            <min value="1"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isModifier value="true"/>
         <isSummary value="true"/>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="PublicationStatus"/>
            </extension>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
               <valueBoolean value="true"/>
            </extension>
            <strength value="required"/>
            <description value="The lifecycle status of a Value Set or Concept Map."/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/publication-status"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="w5"/>
            <map value="status"/>
         </mapping>
      </element>
      <element id="NamingSystem.kind">
         <path value="NamingSystem.kind"/>
         <short value="codesystem | identifier | root"/>
         <definition value="Indicates the purpose for the naming system - what kinds of things does it make unique?"/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.kind"/>
            <min value="1"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="NamingSystemType"/>
            </extension>
            <strength value="required"/>
            <description value="Identifies the purpose of the naming system."/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/namingsystem-type"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="w5"/>
            <map value="class"/>
         </mapping>
      </element>
      <element id="NamingSystem.date">
         <path value="NamingSystem.date"/>
         <short value="Date this was last changed"/>
         <definition value="The date  (and optionally time) when the naming system was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the naming system changes."/>
         <comment value="Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the naming system. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource."/>
         <alias value="Revision Date"/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.date"/>
            <min value="1"/>
            <max value="1"/>
         </base>
         <type>
            <code value="dateTime"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="w5"/>
            <map value="when.recorded"/>
         </mapping>
      </element>
      <element id="NamingSystem.publisher">
         <path value="NamingSystem.publisher"/>
         <short value="Name of the publisher (organization or individual)"/>
         <definition value="The name of the individual or organization that published the naming system."/>
         <comment value="Usually an organization, but may be an individual. The publisher (or steward) of the naming system is the organization or individual primarily responsible for the maintenance and upkeep of the naming system. This is not necessarily the same individual or organization that developed and initially authored the content. The publisher is the primary point of contact for questions or issues with the naming system. This item SHOULD be populated unless the information is available from context."/>
         <requirements value="Helps establish the "authority/credibility" of the naming system.  May also allow for contact."/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.publisher"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="w5"/>
            <map value="who.witness"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact">
         <path value="NamingSystem.contact"/>
         <short value="Contact details for the publisher"/>
         <definition value="Contact details to assist a user in finding and communicating with the publisher."/>
         <comment value="May be a web site, an email address, a telephone number, etc."/>
         <min value="1"/>
         <max value="*"/>
         <base>
            <path value="NamingSystem.contact"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="ContactDetail"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.id">
         <path value="NamingSystem.contact.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.extension">
         <path value="NamingSystem.contact.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.name">
         <path value="NamingSystem.contact.name"/>
         <short value="Name of an individual to contact"/>
         <definition value="The name of an individual to contact."/>
         <comment value="If there is no named individual, the telecom information is for the organization as a whole."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="ContactDetail.name"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom">
         <path value="NamingSystem.contact.telecom"/>
         <short value="Contact details for individual or organization"/>
         <definition value="The contact details for the individual (if a name was provided) or the organization."/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="ContactDetail.telecom"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="ContactPoint"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="cpt-2"/>
            <severity value="error"/>
            <human value="A system is required if a value is provided."/>
            <expression value="value.empty() or system.exists()"/>
            <xpath value="not(exists(f:value)) or exists(f:system)"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="XTN"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="TEL"/>
         </mapping>
         <mapping>
            <identity value="servd"/>
            <map value="ContactPoint"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.id">
         <path value="NamingSystem.contact.telecom.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.extension">
         <path value="NamingSystem.contact.telecom.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.system">
         <path value="NamingSystem.contact.telecom.system"/>
         <short value="phone | fax | email | pager | url | sms | other"/>
         <definition value="Telecommunications form for contact point - what communications system is required to make use of the contact."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="ContactPoint.system"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <condition value="cpt-2"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="ContactPointSystem"/>
            </extension>
            <strength value="required"/>
            <description value="Telecommunications form for contact point"/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/contact-point-system"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="XTN.3"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./scheme"/>
         </mapping>
         <mapping>
            <identity value="servd"/>
            <map value="./ContactPointType"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.value">
         <path value="NamingSystem.contact.telecom.value"/>
         <short value="The actual contact point details"/>
         <definition value="The actual contact point details, in a form that is meaningful to the designated communication system (i.e. phone number or email address)."/>
         <comment value="Additional text data such as phone extension numbers, or notes about use of the contact are sometimes included in the value."/>
         <requirements value="Need to support legacy numbers that are not in a tightly controlled format."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="ContactPoint.value"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="XTN.1 (or XTN.12)"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./url"/>
         </mapping>
         <mapping>
            <identity value="servd"/>
            <map value="./Value"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.use">
         <path value="NamingSystem.contact.telecom.use"/>
         <short value="home | work | temp | old | mobile - purpose of this contact point"/>
         <definition value="Identifies the purpose for the contact point."/>
         <comment value="This is labeled as "Is Modifier" because applications should not mistake a temporary or old contact etc.for a current/permanent one. Applications can assume that a contact is current unless it explicitly says that it is temporary or old."/>
         <requirements value="Need to track the way a person uses this contact, so a user can choose which is appropriate for their purpose."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="ContactPoint.use"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isModifier value="true"/>
         <isSummary value="true"/>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="ContactPointUse"/>
            </extension>
            <strength value="required"/>
            <description value="Use of contact point"/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/contact-point-use"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="XTN.2 - but often indicated by field"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="unique(./use)"/>
         </mapping>
         <mapping>
            <identity value="servd"/>
            <map value="./ContactPointPurpose"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.rank">
         <path value="NamingSystem.contact.telecom.rank"/>
         <short value="Specify preferred order of use (1 = highest)"/>
         <definition value="Specifies a preferred order in which to use a set of contacts. Contacts are ranked with lower values coming before higher values."/>
         <comment value="Note that rank does not necessarily follow the order in which the contacts are represented in the instance."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="ContactPoint.rank"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="positiveInt"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.period">
         <path value="NamingSystem.contact.telecom.period"/>
         <short value="Time period when the contact point was/is in use"/>
         <definition value="Time period when the contact point was/is in use."/>
         <comment value="This is not a duration - that's a measure of time (a separate type), but a duration that occurs at a fixed value of time. A Period specifies a range of time; the context of use will specify whether the entire range applies (e.g. "the patient was an inpatient of the hospital for this time range") or one value from the range applies (e.g. "give to the patient between these two times"). If duration is required, specify the type as Interval|Duration."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="ContactPoint.period"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="Period"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="per-1"/>
            <severity value="error"/>
            <human value="If present, start SHALL have a lower value than end"/>
            <expression value="start.empty() or end.empty() or (start <= end)"/>
            <xpath value="not(exists(f:start)) or not(exists(f:end)) or (f:start/@value <= f:end/@value)"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="DR"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"]"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="N/A"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./usablePeriod[type="IVL<TS>"]"/>
         </mapping>
         <mapping>
            <identity value="servd"/>
            <map value="./StartDate and ./EndDate"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.period.id">
         <path value="NamingSystem.contact.telecom.period.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.period.extension">
         <path value="NamingSystem.contact.telecom.period.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.period.start">
         <path value="NamingSystem.contact.telecom.period.start"/>
         <short value="Starting time with inclusive boundary"/>
         <definition value="The start of the period. The boundary is inclusive."/>
         <comment value="If the low element is missing, the meaning is that the low boundary is not known."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Period.start"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="dateTime"/>
         </type>
         <condition value="ele-1"/>
         <condition value="per-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="DR.1"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./low"/>
         </mapping>
      </element>
      <element id="NamingSystem.contact.telecom.period.end">
         <path value="NamingSystem.contact.telecom.period.end"/>
         <short value="End time with inclusive boundary, if not ongoing"/>
         <definition value="The end of the period. If the end of the period is missing, it means that the period is ongoing. The start may be in the past, and the end date in the future, which means that period is expected/planned to end at that time."/>
         <comment value="The high value includes any matching date/time. i.e. 2012-02-03T10:00:00 is in a period that has a end value of 2012-02-03."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Period.end"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="dateTime"/>
         </type>
         <meaningWhenMissing value="If the end of the period is missing, it means that the period is ongoing"/>
         <condition value="ele-1"/>
         <condition value="per-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="DR.2"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./high"/>
         </mapping>
      </element>
      <element id="NamingSystem.responsible">
         <path value="NamingSystem.responsible"/>
         <short value="Who maintains system namespace?"/>
         <definition value="The name of the organization that is responsible for issuing identifiers or codes for this namespace and ensuring their non-collision."/>
         <comment value="This is the primary organization.  Responsibility for some aspects of a namespace may be delegated."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.responsible"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="w5"/>
            <map value="who.witness"/>
         </mapping>
      </element>
      <element id="NamingSystem.type">
         <path value="NamingSystem.type"/>
         <short value="e.g. driver,  provider,  patient, bank etc."/>
         <definition value="Categorizes a naming system for easier search by grouping related naming systems."/>
         <comment value="This will most commonly be used for identifier namespaces, but categories could potentially be useful for code systems and authorities as well."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.type"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="CodeableConcept"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="IdentifierType"/>
            </extension>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
               <valueBoolean value="true"/>
            </extension>
            <strength value="extensible"/>
            <description value="A coded type for an identifier that can be used to determine which identifier to use for a specific purpose."/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/identifier-type"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="CE/CNE/CWE"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CD"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:CodeableConcept rdfs:subClassOf dt:CD"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.id">
         <path value="NamingSystem.type.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.extension">
         <path value="NamingSystem.type.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.coding">
         <path value="NamingSystem.type.coding"/>
         <short value="Code defined by a terminology system"/>
         <definition value="A reference to a code defined by a terminology system."/>
         <comment value="Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information.  Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true."/>
         <requirements value="Allows for translations and alternate encodings within a code system.  Also supports communication of the same instance to systems requiring different encodings."/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="CodeableConcept.coding"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Coding"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="CE/CNE/CWE subset one of the sets of component 1-3 or 4-6"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CV"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding rdfs:subClassOf dt:CDCoding"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.1-8, C*E.10-22"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="union(., ./translation)"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.coding.id">
         <path value="NamingSystem.type.coding.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.coding.extension">
         <path value="NamingSystem.type.coding.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.coding.system">
         <path value="NamingSystem.type.coding.system"/>
         <short value="Identity of the terminology system"/>
         <definition value="The identification of the code system that defines the meaning of the symbol in the code."/>
         <comment value="The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...).  OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should de-reference to some definition that establish the system clearly and unambiguously."/>
         <requirements value="Need to be unambiguous about the source of the definition of the symbol."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.system"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="uri"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.3"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./codeSystem"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.coding.version">
         <path value="NamingSystem.type.coding.version"/>
         <short value="Version of the system - if relevant"/>
         <definition value="The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured. and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged."/>
         <comment value="Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.version"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.7"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./codeSystemVersion"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.coding.code">
         <path value="NamingSystem.type.coding.code"/>
         <short value="Symbol in syntax defined by the system"/>
         <definition value="A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination)."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <requirements value="Need to refer to a particular code in the system."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.code"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.1"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./code"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.coding.display">
         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
            <valueBoolean value="true"/>
         </extension>
         <path value="NamingSystem.type.coding.display"/>
         <short value="Representation defined by the system"/>
         <definition value="A representation of the meaning of the code in the system, following the rules of the system."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <requirements value="Need to be able to carry a human-readable meaning of the code for readers that do not know  the system."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.display"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.2 - but note this is not well followed"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CV.displayName"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.coding.userSelected">
         <path value="NamingSystem.type.coding.userSelected"/>
         <short value="If this coding was chosen directly by the user"/>
         <definition value="Indicates that this coding was chosen by a user directly - i.e. off a pick list of available items (codes or displays)."/>
         <comment value="Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely."/>
         <requirements value="This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.userSelected"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="boolean"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="Sometimes implied by being first"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CD.codingRationale"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map;   fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [     fhir:source "true";     fhir:target dt:CDCoding.codingRationale\#O   ]"/>
         </mapping>
      </element>
      <element id="NamingSystem.type.text">
         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
            <valueBoolean value="true"/>
         </extension>
         <path value="NamingSystem.type.text"/>
         <short value="Plain text representation of the concept"/>
         <definition value="A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user."/>
         <comment value="Very often the text is the same as a displayName of one of the codings."/>
         <requirements value="The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="CodeableConcept.text"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.9. But note many systems use C*E.2 for this"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./originalText[mediaType/code="text/plain"]/data"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText"/>
         </mapping>
      </element>
      <element id="NamingSystem.description">
         <path value="NamingSystem.description"/>
         <short value="Natural language description of the naming system"/>
         <definition value="A free text natural language description of the naming system from a consumer's perspective. Details about what the namespace identifies including scope, granularity, version labeling, etc."/>
         <comment value="This description can be used to capture details such as why the naming system was built, comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the naming system as conveyed in the 'text' field of the resource itself. This item SHOULD be populated unless the information is available from context (e.g. the language of the profile is presumed to be the predominant language in the place the profile was created)."/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.description"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="markdown"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext">
         <path value="NamingSystem.useContext"/>
         <short value="Context the content is intended to support"/>
         <definition value="The content was developed with a focus and intent of supporting the contexts that are listed. These terms may be used to assist with indexing and searching for appropriate naming system instances."/>
         <comment value="When multiple useContexts are specified, there is no expectation whether all or any of the contexts apply."/>
         <requirements value="Assist in searching for appropriate content."/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="NamingSystem.useContext"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="UsageContext"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.id">
         <path value="NamingSystem.useContext.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.extension">
         <path value="NamingSystem.useContext.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.code">
         <path value="NamingSystem.useContext.code"/>
         <short value="Type of context being specified"/>
         <definition value="A code that identifies the type of context being specified by this usage context."/>
         <comment value="Codes may be defined very casually in enumerations or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information."/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="UsageContext.code"/>
            <min value="1"/>
            <max value="1"/>
         </base>
         <type>
            <code value="Coding"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="UsageContextType"/>
            </extension>
            <strength value="extensible"/>
            <description value="A code that specifies a type of context being specified by a usage context"/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/usage-context-type"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="CE/CNE/CWE subset one of the sets of component 1-3 or 4-6"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CV"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding rdfs:subClassOf dt:CDCoding"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.code.id">
         <path value="NamingSystem.useContext.code.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.code.extension">
         <path value="NamingSystem.useContext.code.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.code.system">
         <path value="NamingSystem.useContext.code.system"/>
         <short value="Identity of the terminology system"/>
         <definition value="The identification of the code system that defines the meaning of the symbol in the code."/>
         <comment value="The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...).  OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should de-reference to some definition that establish the system clearly and unambiguously."/>
         <requirements value="Need to be unambiguous about the source of the definition of the symbol."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.system"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="uri"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.3"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./codeSystem"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.code.version">
         <path value="NamingSystem.useContext.code.version"/>
         <short value="Version of the system - if relevant"/>
         <definition value="The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured. and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged."/>
         <comment value="Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.version"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.7"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./codeSystemVersion"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.code.code">
         <path value="NamingSystem.useContext.code.code"/>
         <short value="Symbol in syntax defined by the system"/>
         <definition value="A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination)."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <requirements value="Need to refer to a particular code in the system."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.code"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.1"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./code"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.code.display">
         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
            <valueBoolean value="true"/>
         </extension>
         <path value="NamingSystem.useContext.code.display"/>
         <short value="Representation defined by the system"/>
         <definition value="A representation of the meaning of the code in the system, following the rules of the system."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <requirements value="Need to be able to carry a human-readable meaning of the code for readers that do not know  the system."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.display"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.2 - but note this is not well followed"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CV.displayName"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.code.userSelected">
         <path value="NamingSystem.useContext.code.userSelected"/>
         <short value="If this coding was chosen directly by the user"/>
         <definition value="Indicates that this coding was chosen by a user directly - i.e. off a pick list of available items (codes or displays)."/>
         <comment value="Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely."/>
         <requirements value="This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.userSelected"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="boolean"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="Sometimes implied by being first"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CD.codingRationale"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map;   fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [     fhir:source "true";     fhir:target dt:CDCoding.codingRationale\#O   ]"/>
         </mapping>
      </element>
      <element id="NamingSystem.useContext.value[x]">
         <path value="NamingSystem.useContext.value[x]"/>
         <short value="Value that defines the context"/>
         <definition value="A value that defines the context specified in this context of use. The interpretation of the value is defined by the code."/>
         <comment value="Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination."/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="UsageContext.value[x]"/>
            <min value="1"/>
            <max value="1"/>
         </base>
         <type>
            <code value="CodeableConcept"/>
         </type>
         <type>
            <code value="Quantity"/>
         </type>
         <type>
            <code value="Range"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="UsageContextValue"/>
            </extension>
            <strength value="example"/>
            <description value="A code that defines the specific value for the context being specified"/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/use-context"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="CE/CNE/CWE"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CD"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:CodeableConcept rdfs:subClassOf dt:CD"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction">
         <path value="NamingSystem.jurisdiction"/>
         <short value="Intended jurisdiction for naming system (if applicable)"/>
         <definition value="A legal or geographic region in which the naming system is intended to be used."/>
         <comment value="It may be possible for the naming system to be used in jurisdictions other than those for which it was originally designed or intended."/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="NamingSystem.jurisdiction"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="CodeableConcept"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="Jurisdiction"/>
            </extension>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
               <valueBoolean value="true"/>
            </extension>
            <strength value="extensible"/>
            <description value="Countries and regions within which this artifact is targeted for use"/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/jurisdiction"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="CE/CNE/CWE"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CD"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:CodeableConcept rdfs:subClassOf dt:CD"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.id">
         <path value="NamingSystem.jurisdiction.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.extension">
         <path value="NamingSystem.jurisdiction.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.coding">
         <path value="NamingSystem.jurisdiction.coding"/>
         <short value="Code defined by a terminology system"/>
         <definition value="A reference to a code defined by a terminology system."/>
         <comment value="Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information.  Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true."/>
         <requirements value="Allows for translations and alternate encodings within a code system.  Also supports communication of the same instance to systems requiring different encodings."/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="CodeableConcept.coding"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Coding"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="CE/CNE/CWE subset one of the sets of component 1-3 or 4-6"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CV"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding rdfs:subClassOf dt:CDCoding"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.1-8, C*E.10-22"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="union(., ./translation)"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.coding.id">
         <path value="NamingSystem.jurisdiction.coding.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.coding.extension">
         <path value="NamingSystem.jurisdiction.coding.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.coding.system">
         <path value="NamingSystem.jurisdiction.coding.system"/>
         <short value="Identity of the terminology system"/>
         <definition value="The identification of the code system that defines the meaning of the symbol in the code."/>
         <comment value="The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...).  OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should de-reference to some definition that establish the system clearly and unambiguously."/>
         <requirements value="Need to be unambiguous about the source of the definition of the symbol."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.system"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="uri"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.3"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./codeSystem"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.coding.version">
         <path value="NamingSystem.jurisdiction.coding.version"/>
         <short value="Version of the system - if relevant"/>
         <definition value="The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured. and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged."/>
         <comment value="Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.version"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.7"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./codeSystemVersion"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.coding.code">
         <path value="NamingSystem.jurisdiction.coding.code"/>
         <short value="Symbol in syntax defined by the system"/>
         <definition value="A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination)."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <requirements value="Need to refer to a particular code in the system."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.code"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.1"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./code"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.coding.display">
         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
            <valueBoolean value="true"/>
         </extension>
         <path value="NamingSystem.jurisdiction.coding.display"/>
         <short value="Representation defined by the system"/>
         <definition value="A representation of the meaning of the code in the system, following the rules of the system."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <requirements value="Need to be able to carry a human-readable meaning of the code for readers that do not know  the system."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.display"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.2 - but note this is not well followed"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CV.displayName"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.coding.userSelected">
         <path value="NamingSystem.jurisdiction.coding.userSelected"/>
         <short value="If this coding was chosen directly by the user"/>
         <definition value="Indicates that this coding was chosen by a user directly - i.e. off a pick list of available items (codes or displays)."/>
         <comment value="Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely."/>
         <requirements value="This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Coding.userSelected"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="boolean"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="Sometimes implied by being first"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="CD.codingRationale"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map;   fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [     fhir:source "true";     fhir:target dt:CDCoding.codingRationale\#O   ]"/>
         </mapping>
      </element>
      <element id="NamingSystem.jurisdiction.text">
         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
            <valueBoolean value="true"/>
         </extension>
         <path value="NamingSystem.jurisdiction.text"/>
         <short value="Plain text representation of the concept"/>
         <definition value="A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user."/>
         <comment value="Very often the text is the same as a displayName of one of the codings."/>
         <requirements value="The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="CodeableConcept.text"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="C*E.9. But note many systems use C*E.2 for this"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./originalText[mediaType/code="text/plain"]/data"/>
         </mapping>
         <mapping>
            <identity value="orim"/>
            <map value="fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText"/>
         </mapping>
      </element>
      <element id="NamingSystem.usage">
         <path value="NamingSystem.usage"/>
         <short value="How/where is it used"/>
         <definition value="Provides guidance on the use of the namespace, including the handling of formatting characters, use of upper vs. lower case, etc."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.usage"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId">
         <path value="NamingSystem.uniqueId"/>
         <short value="Unique identifiers used for system"/>
         <definition value="Indicates how the system may be identified when referenced in electronic exchange."/>
         <comment value="Multiple identifiers may exist, either due to duplicate registration, regional rules, needs of different communication technologies, etc."/>
         <min value="1"/>
         <max value="*"/>
         <base>
            <path value="NamingSystem.uniqueId"/>
            <min value="1"/>
            <max value="*"/>
         </base>
         <type>
            <code value="BackboneElement"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.id">
         <path value="NamingSystem.uniqueId.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.extension">
         <path value="NamingSystem.uniqueId.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.modifierExtension">
         <path value="NamingSystem.uniqueId.modifierExtension"/>
         <short value="Extensions that cannot be ignored"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <alias value="modifiers"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <isModifier value="true"/>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.type">
         <path value="NamingSystem.uniqueId.type"/>
         <short value="oid | uuid | uri | other"/>
         <definition value="Identifies the unique identifier scheme used for this particular identifier."/>
         <comment value="Different identifier types may be used in different types of communications (OIDs for v3, URIs for FHIR, etc.).  Other includes RUIDs from v3, standard v2 code name strings, etc."/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.uniqueId.type"/>
            <min value="1"/>
            <max value="1"/>
         </base>
         <type>
            <code value="code"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <binding>
            <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
               <valueString value="NamingSystemIdentifierType"/>
            </extension>
            <strength value="required"/>
            <description value="Identifies the style of unique identifier used to identify a namespace."/>
            <valueSetReference>
               <reference value="http://hl7.org/fhir/ValueSet/namingsystem-identifier-type"/>
            </valueSetReference>
         </binding>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.value">
         <path value="NamingSystem.uniqueId.value"/>
         <short value="The unique identifier"/>
         <definition value="The string that should be sent over the wire to identify the code system or identifier system."/>
         <comment value="If the value is a URI intended for use as FHIR system identifier, the URI should not contain "\" or "?" or "," since this makes escaping very difficult."/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.uniqueId.value"/>
            <min value="1"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="w5"/>
            <map value="id"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.preferred">
         <path value="NamingSystem.uniqueId.preferred"/>
         <short value="Is this the id that should be used for this type"/>
         <definition value="Indicates whether this identifier is the "preferred" identifier of this type."/>
         <min value="1"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.uniqueId.preferred"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="boolean"/>
         </type>
         <meaningWhenMissing value="If there are multiple ids, and one is labeled "preferred", then the assumption is that the others are not preferred. In the absence of any id marked as preferred, no inference can be drawn"/>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.comment">
         <path value="NamingSystem.uniqueId.comment"/>
         <short value="Notes about identifier usage"/>
         <definition value="Notes about the past or intended usage of this identifier."/>
         <comment value="e.g. "must be used in Germany" or "was initially published in error with this value"."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.uniqueId.comment"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.period">
         <path value="NamingSystem.uniqueId.period"/>
         <short value="When is identifier valid?"/>
         <definition value="Identifies the period of time over which this identifier is considered appropriate to refer to the naming system.  Outside of this window, the identifier might be non-deterministic."/>
         <comment value="Within a registry, a given identifier should only be "active" for a single namespace at a time.  (Ideally, an identifier should only ever be associated with a single namespace across all time)."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.uniqueId.period"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="Period"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="per-1"/>
            <severity value="error"/>
            <human value="If present, start SHALL have a lower value than end"/>
            <expression value="start.empty() or end.empty() or (start <= end)"/>
            <xpath value="not(exists(f:start)) or not(exists(f:end)) or (f:start/@value <= f:end/@value)"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="DR"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"]"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.period.id">
         <path value="NamingSystem.uniqueId.period.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.period.extension">
         <path value="NamingSystem.uniqueId.period.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.period.start">
         <path value="NamingSystem.uniqueId.period.start"/>
         <short value="Starting time with inclusive boundary"/>
         <definition value="The start of the period. The boundary is inclusive."/>
         <comment value="If the low element is missing, the meaning is that the low boundary is not known."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Period.start"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="dateTime"/>
         </type>
         <condition value="ele-1"/>
         <condition value="per-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="DR.1"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./low"/>
         </mapping>
      </element>
      <element id="NamingSystem.uniqueId.period.end">
         <path value="NamingSystem.uniqueId.period.end"/>
         <short value="End time with inclusive boundary, if not ongoing"/>
         <definition value="The end of the period. If the end of the period is missing, it means that the period is ongoing. The start may be in the past, and the end date in the future, which means that period is expected/planned to end at that time."/>
         <comment value="The high value includes any matching date/time. i.e. 2012-02-03T10:00:00 is in a period that has a end value of 2012-02-03."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Period.end"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="dateTime"/>
         </type>
         <meaningWhenMissing value="If the end of the period is missing, it means that the period is ongoing"/>
         <condition value="ele-1"/>
         <condition value="per-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="DR.2"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="./high"/>
         </mapping>
      </element>
      <element id="NamingSystem.replacedBy">
         <path value="NamingSystem.replacedBy"/>
         <short value="Use this instead"/>
         <definition value="For naming systems that are retired, indicates the naming system that should be used in their place (if any)."/>
         <comment value="References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="NamingSystem.replacedBy"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="Reference"/>
            <targetProfile value="https://fhir.nhs.uk/STU3/StructureDefinition/NHSDigital-NamingSystem-1"/>
         </type>
         <condition value="ele-1"/>
         <condition value="nsd-3"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ref-1"/>
            <severity value="error"/>
            <human value="SHALL have a contained resource if a local reference is provided"/>
            <expression value="reference.startsWith('#').not() or (reference.substring(1).trace('url') in %resource.contained.id.trace('ids'))"/>
            <xpath value="not(starts-with(f:reference/@value, '#')) or exists(ancestor::*[self::f:entry or self::f:parameter]/f:resource/f:*/f:contained/f:*[f:id/@value=substring-after(current()/f:reference/@value, '#')]|/*/f:contained/f:*[f:id/@value=substring-after(current()/f:reference/@value, '#')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="The target of a resource reference is a RIM entry point (Act, Role, or Entity)"/>
         </mapping>
      </element>
      <element id="NamingSystem.replacedBy.id">
         <path value="NamingSystem.replacedBy.id"/>
         <representation value="xmlAttr"/>
         <short value="xml:id (or equivalent in JSON)"/>
         <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
         <comment value="Note that FHIR strings may not exceed 1MB in size"/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
      </element>
      <element id="NamingSystem.replacedBy.extension">
         <path value="NamingSystem.replacedBy.extension"/>
         <slicing>
            <discriminator>
               <type value="value"/>
               <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
         </slicing>
         <short value="Additional Content defined by implementations"/>
         <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
         <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
         <alias value="extensions"/>
         <alias value="user content"/>
         <min value="0"/>
         <max value="*"/>
         <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
         </base>
         <type>
            <code value="Extension"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
         </constraint>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.replacedBy.reference">
         <path value="NamingSystem.replacedBy.reference"/>
         <short value="Literal reference, Relative, internal or absolute URL"/>
         <definition value="A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources."/>
         <comment value="Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries.   Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Reference.reference"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <condition value="ref-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
      <element id="NamingSystem.replacedBy.identifier">
         <path value="NamingSystem.replacedBy.identifier"/>
         <short value="Logical reference, when literal reference is not known"/>
         <definition value="An identifier for the other resource. This is used when there is no way to reference the other resource directly, either because the entity is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference."/>
         <comment value="When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.   When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference  Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Reference.identifier"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="Identifier"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="v2"/>
            <map value="CX / EI (occasionally, more often EI maps to a resource id or a URL)"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="II - see see identifier pattern at http://wiki.hl7.org/index.php?title=Common_Design_Patterns#Identifier_Pattern for relevant discussion. The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs.  Also maps to Role[classCode=IDENT]"/>
         </mapping>
         <mapping>
            <identity value="servd"/>
            <map value="Identifier"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value=".identifier"/>
         </mapping>
      </element>
      <element id="NamingSystem.replacedBy.display">
         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
            <valueBoolean value="true"/>
         </extension>
         <path value="NamingSystem.replacedBy.display"/>
         <short value="Text alternative for the resource"/>
         <definition value="Plain text narrative that identifies the resource in addition to the resource reference."/>
         <comment value="This is generally not the same as the Resource.text of the referenced resource.  The purpose is to identify what's being referenced, not to fully describe it."/>
         <min value="0"/>
         <max value="1"/>
         <base>
            <path value="Reference.display"/>
            <min value="0"/>
            <max value="1"/>
         </base>
         <type>
            <code value="string"/>
         </type>
         <condition value="ele-1"/>
         <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression value="hasValue() | (children().count() > id.count())"/>
            <xpath value="@value|f:*|h:div"/>
         </constraint>
         <isSummary value="true"/>
         <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
         </mapping>
         <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
         </mapping>
      </element>
   </snapshot>
   <differential>
      <element id="NamingSystem.meta">
         <path value="NamingSystem.meta"/>
         <min value="1"/>
      </element>
      <element id="NamingSystem.meta.profile">
         <path value="NamingSystem.meta.profile"/>
         <min value="1"/>
      </element>
      <element id="NamingSystem.publisher">
         <path value="NamingSystem.publisher"/>
         <min value="1"/>
      </element>
      <element id="NamingSystem.contact">
         <path value="NamingSystem.contact"/>
         <min value="1"/>
      </element>
      <element id="NamingSystem.description">
         <path value="NamingSystem.description"/>
         <min value="1"/>
      </element>
      <element id="NamingSystem.uniqueId.preferred">
         <path value="NamingSystem.uniqueId.preferred"/>
         <min value="1"/>
      </element>
      <element id="NamingSystem.replacedBy">
         <path value="NamingSystem.replacedBy"/>
         <type>
            <code value="Reference"/>
            <targetProfile value="https://fhir.nhs.uk/STU3/StructureDefinition/NHSDigital-NamingSystem-1"/>
         </type>
      </element>
   </differential>
</StructureDefinition>