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="PDS-TelecomUsage-1"/>
   <url value="https://fhir.nhs.uk/STU3/CodeSystem/PDS-TelecomUsage-1"/>
   <version value="1.0.0"/>
   <name value="PDS Telecom Usage"/>
   <status value="draft"/>
   <date value="2018-11-28T00:00:00+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 identify the type or usage of the telecommunication address, in use by the Personal Demographics Service."/>
   <copyright value="Copyright © 2018 NHS Digital"/>
   <caseSensitive value="true"/>
   <content value="complete"/>
      <code value="AS"/>
      <display value="An automated answering machine"/>
      <code value="EC"/>
      <display value="A contact specifically designated to be used for emergencies"/>
      <code value="H"/>
      <display value="A communication address at a home"/>
      <code value="HP"/>
      <display value="The primary home, to reach a person after business hours"/>
      <code value="HV"/>
      <display value="A vacation home, to reach a person while on vacation"/>
      <code value="MC"/>
      <display value="A telecommunication device that moves and stays with its owner"/>
      <code value="PG"/>
      <display value="A paging device suitable to solicit a callback or to leave a very short message"/>
      <code value="WP"/>
      <display value="An office address"/>