<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="http://ontariohealth.ca/fhir/StructureDefinition/ca-on-mha-profile-observation-racial-group" />
  <version value="1.0.0" />
  <name value="ObservationRacialGroup" />
  <status value="active" />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Observation" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation.meta">
      <path value="Observation.meta" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.meta.profile">
      <path value="Observation.meta.profile" />
      <min value="1" />
      <max value="1" />
      <fixedCanonical value="http://ontariohealth.ca/fhir/StructureDefinition/ca-on-mha-profile-observation-racial-group" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.status">
      <path value="Observation.status" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.category">
      <path value="Observation.category" />
      <min value="1" />
      <max value="1" />
      <mustSupport value="true" />
      <binding>
        <strength value="required" />
      </binding>
    </element>
    <element id="Observation.category.coding">
      <path value="Observation.category.coding" />
      <min value="1" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.category.coding.system">
      <path value="Observation.category.coding.system" />
      <min value="1" />
      <fixedUri value="http://terminology.hl7.org/CodeSystem/observation-category" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.category.coding.code">
      <path value="Observation.category.coding.code" />
      <min value="1" />
      <fixedCode value="social-history" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.category.coding.display">
      <path value="Observation.category.coding.display" />
      <min value="1" />
      <fixedString value="Social History" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.code">
      <path value="Observation.code" />
      <mustSupport value="true" />
      <binding>
        <strength value="required" />
        <valueSet value="http://ontariohealth.ca/fhir/ValueSet/sdohObservationCode|2.0.0" />
      </binding>
    </element>
    <element id="Observation.code.coding">
      <path value="Observation.code.coding" />
      <min value="1" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.code.coding.system">
      <path value="Observation.code.coding.system" />
      <min value="1" />
      <fixedUri value="http://loinc.org" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.code.coding.code">
      <path value="Observation.code.coding.code" />
      <min value="1" />
      <fixedCode value="32624-9" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.code.coding.display">
      <path value="Observation.code.coding.display" />
      <min value="1" />
      <fixedString value="Race" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.subject">
      <path value="Observation.subject" />
      <min value="1" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://ontariohealth.ca/fhir/StructureDefinition/ca-on-mha-profile-patient" />
      </type>
      <mustSupport value="true" />
    </element>
    <element id="Observation.subject.reference">
      <path value="Observation.subject.reference" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.effective[x]">
      <path value="Observation.effective[x]" />
      <min value="1" />
      <type>
        <code value="dateTime" />
      </type>
      <constraint>
        <key value="sdoh-race-inv-1" />
        <severity value="error" />
        <human value="Effective Date must be a full date (YYYY-MM-DD)" />
        <expression value="$this.toString().matches('^[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])$')" />
      </constraint>
      <mustSupport value="true" />
    </element>
    <element id="Observation.value[x]">
      <path value="Observation.value[x]" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <mustSupport value="true" />
    </element>
    <element id="Observation.value[x].coding">
      <path value="Observation.value[x].coding" />
      <max value="1" />
      <mustSupport value="true" />
      <binding>
        <strength value="required" />
        <description value="A code that represents the race of the person" />
        <valueSet value="http://ontariohealth.ca/fhir/ValueSet/mha-race" />
      </binding>
    </element>
    <element id="Observation.value[x].coding.system">
      <path value="Observation.value[x].coding.system" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.value[x].coding.code">
      <path value="Observation.value[x].coding.code" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.value[x].coding.display">
      <path value="Observation.value[x].coding.display" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.value[x].text">
      <path value="Observation.value[x].text" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.dataAbsentReason">
      <path value="Observation.dataAbsentReason" />
      <mustSupport value="true" />
      <binding>
        <strength value="required" />
        <description value="codes that indicate the reason the value is missing" />
        <valueSet value="http://ontariohealth.ca/fhir/ValueSet/mha-sdoh-data-absent-reason" />
      </binding>
    </element>
    <element id="Observation.dataAbsentReason.coding">
      <path value="Observation.dataAbsentReason.coding" />
      <min value="1" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.dataAbsentReason.coding.system">
      <path value="Observation.dataAbsentReason.coding.system" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.dataAbsentReason.coding.code">
      <path value="Observation.dataAbsentReason.coding.code" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.dataAbsentReason.coding.display">
      <path value="Observation.dataAbsentReason.coding.display" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
  </differential>
</StructureDefinition>