Explore and Make use of Nationally Defined Messaging APIs

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<?xml version="1.0" encoding="UTF-8" standalone="no"?><CodeSystem xmlns="http://hl7.org/fhir">
   <id value="UEC-ObservationValue-1"/>
   <url value="https://fhir.nhs.uk/STU3/CodeSystem/UEC-ObservationValue-1"/>
   <version value="1.0.0"/>
   <name value="UEC Observation Value"/>
   <status value="draft"/>
   <date value="2020-04-14T00:00:00+00:00"/>
   <publisher value="NHS Digital"/>
      <name value="Interoperability Team"/>
         <system value="email"/>
         <value value="interoperabilityteam@nhs.net"/>
         <use value="work"/>
   <description value="A CodeSystem to assert the value of an Observation in Urgent and Emergency Care."/>
   <copyright value="Copyright © 2020 NHS Digital"/>
   <caseSensitive value="true"/>
   <content value="complete"/>
      <code value="present"/>
      <display value="Present"/>
      <code value="absent"/>
      <display value="Absent"/>
      <code value="confirmed"/>
      <display value="Confirmed"/>
      <code value="unconfirmed"/>
      <display value="Unconfirmed"/>