<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="51e0330f-2596-4da4-81ef-f999169b97ec" />
  <meta>
    <versionId value="18" />
    <lastUpdated value="2022-02-07T19:11:38.542+00:00" />
  </meta>
  <url value="http://ehealthontario.ca/fhir/StructureDefinition/ca-on-lab-ext-note-source" />
  <name value="SourceOfNote" />
  <status value="active" />
  <date value="2022-02-07T19:11:37.8068994+00:00" />
  <description value="Notes" />
  <purpose value="Captures notes in DiagnosticReport" />
  <fhirVersion value="4.0.1" />
  <mapping>
    <identity value="OLIS-HL7-V2" />
    <name value="OLIS-HL7-V2" />
  </mapping>
  <kind value="complex-type" />
  <abstract value="false" />
  <context>
    <type value="element" />
    <expression value="ServiceRequest.note" />
  </context>
  <context>
    <type value="element" />
    <expression value="Observation.note" />
  </context>
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <mustSupport value="true" />
      <isModifier value="false" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://ehealthontario.ca/fhir/StructureDefinition/ca-on-lab-ext-note-source" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <mustSupport value="true" />
      <binding>
        <strength value="required" />
        <description value="Codes supported by Ontario Health differentiating source ofo comments types" />
        <valueSet value="http://terminology.hl7.org/ValueSet/v2-0105" />
      </binding>
    </element>
    <element id="Extension.value[x].coding">
      <path value="Extension.value[x].coding" />
      <min value="1" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.value[x].coding.system">
      <path value="Extension.value[x].coding.system" />
      <min value="1" />
      <fixedUri value="http://terminology.hl7.org/CodeSystem/v2-0105" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.value[x].coding.code">
      <path value="Extension.value[x].coding.code" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.value[x].coding.display">
      <path value="Extension.value[x].coding.display" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
  </differential>
</StructureDefinition>