<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="BloodGroup" />
  <url value="https://novoheal.my/fhir/StructureDefinition/BloodGroup" />
  <version value="0.0.1" />
  <name value="BloodGroup" />
  <status value="draft" />
  <date value="2024" />
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <context>
    <type value="element" />
    <expression value="Patient" />
  </context>
  <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://novoheal.my/fhir/StructureDefinition/BloodGroup" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <type>
        <code value="CodeableConcept" />
      </type>
    </element>
    <element id="Extension.value[x].coding.system">
      <path value="Extension.value[x].coding.system" />
      <binding>
        <strength value="example" />
        <valueSet value="https://novoheal.my/CodeSystem" />
      </binding>
    </element>
    <element id="Extension.value[x].coding.code">
      <path value="Extension.value[x].coding.code" />
      <short value="A+ | A- | B+ | B- | AB+ | AB- | O+| O-" />
      <definition value="This is intended to capture the patient's blood group." />
      <binding>
        <strength value="required" />
        <valueSet value="https://novoheal.my/CodeSystem/BloodGroup" />
      </binding>
    </element>
  </differential>
</StructureDefinition>