<StructureDefinition xmlns="http://hl7.org/fhir">
  <meta>
    <lastUpdated value="2019-03-12T19:00:18.7780238+00:00" />
  </meta>
  <url value="http://ehealthontario.ca/fhir/StructureDefinition/ca-on-lab-ext-subtype" />
  <name value="data-subtype" />
  <status value="draft" />
  <date value="2019-03-12T19:00:18.6022902+00:00" />
  <description value="Indicate the subtype of data (exmpale. PDF,XML)" />
  <purpose value="OLIS supports data subtype for Attachment data type." />
  <fhirVersion value="3.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="Attachment" />
  <context value="Observation.value[x]" />
  <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="http://ehealthontario.ca/fhir/StructureDefinition/ca-on-lab-ext-subtype" />
    </element>
    <element id="Extension.value[x]:valueCoding">
      <path value="Extension.valueCoding" />
      <sliceName value="valueCoding" />
      <type>
        <code value="Coding" />
      </type>
      <mustSupport value="true" />
    </element>
    <element id="Extension.value[x]:valueCoding.system">
      <path value="Extension.valueCoding.system" />
      <mustSupport value="true" />
      <binding>
        <strength value="preferred" />
        <valueSetUri value="http://ehealthontario.ca/fhir/ValueSet/lab/observation-data-subtype" />
      </binding>
    </element>
    <element id="Extension.value[x]:valueCoding.code">
      <path value="Extension.valueCoding.code" />
      <mustSupport value="true" />
    </element>
  </differential>
</StructureDefinition>