<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="CMH-SU-ext-referral-source" />
  <url value="https://ccim.on.ca/fhir/iar/StructureDefinition/CMH-SU-ext-referral-source" />
  <name value="CMH-SU-ext-referral-source" />
  <status value="draft" />
  <fhirVersion value="3.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="ReferralRequest.requester.agent" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="https://ccim.on.ca/fhir/iar/StructureDefinition/CMH-SU-ext-referral-source" />
    </element>
    <element id="Extension.value[x]:valueCode">
      <path value="Extension.valueCode" />
      <sliceName value="valueCode" />
      <min value="1" />
      <type>
        <code value="code" />
      </type>
      <binding>
        <strength value="required" />
        <valueSetReference>
          <reference value="https://ccim.on.ca/fhir/mds/ValueSet/vs-su-referral-source" />
        </valueSetReference>
      </binding>
    </element>
  </differential>
</StructureDefinition>