<StructureDefinition xmlns="http://hl7.org/fhir">
  <text>
    <status value="empty" />
    <div xmlns="http://www.w3.org/1999/xhtml" />
  </text>
  <url value="http://moh.gov.vn/fhir/core/StructureDefinition/observation-HIV-status" />
  <id value="observation-HIV-status" />
  <version value="1.0.0" />
  <name value="ObservationHIVStatus" />
  <title value="Observation - HIV Status profile" />
  <status value="draft" />
  <description value="Tình trạng lây nhiễm virus HIV" />
  <purpose value="TODO: add note" />
  <copyright value="Bộ Y tế Việt Nam" />
  <fhirVersion value="4.0.1" />
  <mapping>
    <identity value="workflow" />
    <uri value="http://hl7.org/fhir/workflow" />
    <name value="Workflow Pattern" />
  </mapping>
  <mapping>
    <identity value="sct-concept" />
    <uri value="http://snomed.info/conceptdomain" />
    <name value="SNOMED CT Concept Domain Binding" />
  </mapping>
  <mapping>
    <identity value="v2" />
    <uri value="http://hl7.org/v2" />
    <name value="HL7 v2 Mapping" />
  </mapping>
  <mapping>
    <identity value="rim" />
    <uri value="http://hl7.org/v3" />
    <name value="RIM Mapping" />
  </mapping>
  <mapping>
    <identity value="w5" />
    <uri value="http://hl7.org/fhir/fivews" />
    <name value="FiveWs Pattern Mapping" />
  </mapping>
  <mapping>
    <identity value="sct-attr" />
    <uri value="http://snomed.org/attributebinding" />
    <name value="SNOMED CT Attribute Binding" />
  </mapping>
  <kind value="resource" />
  <abstract value="false" />
  <type value="Observation" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation.status">
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-display-hint">
        <valueString value="default: final" />
      </extension>
      <path value="Observation.status" />
      <fixedCode value="final" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.category">
      <path value="Observation.category" />
      <min value="1" />
      <patternCodeableConcept>
        <coding>
          <system value="http://terminology.hl7.org/CodeSystem/observation-category" />
          <code value="social-history" />
          <display value="Social History" />
        </coding>
        <text value="Social Factor &amp; Patient History" />
      </patternCodeableConcept>
      <mustSupport value="true" />
    </element>
    <element id="Observation.code">
      <path value="Observation.code" />
      <patternCodeableConcept>
        <text value="Những bệnh nặng và thương tổn chính mà bệnh nhân đã gặp" />
      </patternCodeableConcept>
      <mustSupport value="true" />
    </element>
    <element id="Observation.code.coding">
      <path value="Observation.code.coding" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="system" />
        </discriminator>
        <discriminator>
          <type value="value" />
          <path value="code" />
        </discriminator>
        <rules value="open" />
      </slicing>
      <mustSupport value="false" />
    </element>
    <element id="Observation.code.coding:requireCoding">
      <path value="Observation.code.coding" />
      <sliceName value="requireCoding" />
      <min value="1" />
      <max value="1" />
      <patternCoding>
        <system value="http://loinc.org" />
        <code value="55277-8" />
        <display value="HIV status" />
      </patternCoding>
    </element>
    <element id="Observation.subject">
      <path value="Observation.subject" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://moh.gov.vn/fhir/core/StructureDefinition/vn-core-patient" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Patient" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Group" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Device" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Location" />
      </type>
      <mustSupport value="true" />
    </element>
    <element id="Observation.encounter">
      <path value="Observation.encounter" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://moh.gov.vn/fhir/core/StructureDefinition/vn-core-encounter" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Encounter" />
      </type>
      <mustSupport value="true" />
    </element>
    <element id="Observation.performer">
      <path value="Observation.performer" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://moh.gov.vn/fhir/core/StructureDefinition/vn-core-practitioner" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Practitioner" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/PractitionerRole" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Organization" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/CareTeam" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Patient" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/RelatedPerson" />
      </type>
      <mustSupport value="true" />
    </element>
    <element id="Observation.value[x]">
      <path value="Observation.value[x]" />
      <slicing>
        <discriminator>
          <type value="type" />
          <path value="$this" />
        </discriminator>
        <rules value="open" />
      </slicing>
      <mustSupport value="true" />
    </element>
    <element id="Observation.value[x]:valueCodeableConcept">
      <path value="Observation.valueCodeableConcept" />
      <sliceName value="valueCodeableConcept" />
      <min value="1" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <mustSupport value="true" />
      <binding>
        <strength value="extensible" />
        <description value="ValueSet về trạng thái lây nhiễm" />
        <valueSet value="http://loinc.org/vs/LL3639-3" />
      </binding>
    </element>
  </differential>
</StructureDefinition>