<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="Observation" />
  <url value="https://fhir.centraxx.de/StructureDefinition/ComplicationsNaturalIdentifier" />
  <version value="2025.4.0" />
  <name value="ComplicationsNaturalIdentifier" />
  <status value="active" />
  <publisher value="Kairos an IQVIA business" />
  <description value="Represents a HDRP Complications Natural Identifier. Complications is resolved by xmlId(Observation.identifier)." />
  <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.identifier">
      <path value="Observation.identifier" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="system" />
        </discriminator>
        <rules value="closed" />
      </slicing>
      <min value="0" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.identifier:xmlId">
      <path value="Observation.identifier" />
      <sliceName value="xmlId" />
      <min value="0" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.identifier:xmlId.system">
      <path value="Observation.identifier.system" />
      <min value="1" />
      <max value="1" />
      <fixedString value="https://fhir.centraxx.de/system/complications/xmlId" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.identifier:xmlId.value">
      <path value="Observation.identifier.value" />
      <min value="1" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
  </differential>
</StructureDefinition>