<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="MedicationReference" />
  <url value="https://fhir.centraxx.de/StructureDefinition/MedicationReference" />
  <version value="2026.2.0" />
  <name value="MedicationReference" />
  <status value="active" />
  <publisher value="IQVIA" />
  <description value="Represents an HDRP Medication Reference" />
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <type value="Reference" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Reference" />
  <derivation value="constraint" />
  <differential>
    <element id="Reference.reference">
      <path value="Reference.reference" />
      <mustSupport value="true" />
    </element>
    <element id="Reference.identifier">
      <path value="Reference.identifier" />
      <mustSupport value="true" />
    </element>
    <element id="Reference.identifier.extension">
      <path value="Reference.identifier.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <rules value="closed" />
      </slicing>
      <min value="2" />
      <max value="2" />
      <type>
        <code value="Extension" />
      </type>
      <mustSupport value="true" />
    </element>
    <element id="Reference.identifier.extension:medicationCode">
      <path value="Reference.identifier.extension" />
      <sliceName value="medicationCode" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://fhir.centraxx.de/extension/medication/identifier/code" />
      </type>
      <mustSupport value="true" />
    </element>
    <element id="Reference.identifier.extension:fillerOrderNumber">
      <path value="Reference.identifier.extension" />
      <sliceName value="fillerOrderNumber" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://fhir.centraxx.de/extension/medication/identifier/fillerOrderNumber" />
      </type>
      <mustSupport value="true" />
    </element>
  </differential>
</StructureDefinition>