<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="KBV-EX-FOR-Alternative-IK" />
  <url value="https://fhir.kbv.de/StructureDefinition/KBV_EX_FOR_Alternative_IK" />
  <version value="1.3.1" />
  <name value="KBV_EX_FOR_Alternative_IK" />
  <status value="active" />
  <date value="2026-01-09" />
  <publisher value="Kassenärztliche Bundesvereinigung (KBV)" />
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <context>
    <type value="element" />
    <expression value="Identifier" />
  </context>
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <short value="IK des Kostenträgers" />
      <definition value="Institutionskennzeichen (IK) eines Kostenträgers, der nicht die zuständige Krankenkasse ist, bspw. eine Berufsgenossenschaft (BG) oder eine Unfallkasse (UK)" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="https://fhir.kbv.de/StructureDefinition/KBV_EX_FOR_Alternative_IK" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <slicing>
        <discriminator>
          <type value="type" />
          <path value="$this" />
        </discriminator>
        <rules value="closed" />
      </slicing>
      <min value="1" />
      <type>
        <code value="Identifier" />
      </type>
    </element>
    <element id="Extension.value[x]:valueIdentifier">
      <path value="Extension.value[x]" />
      <sliceName value="valueIdentifier" />
      <min value="1" />
      <type>
        <code value="Identifier" />
        <profile value="http://fhir.de/StructureDefinition/identifier-iknr" />
      </type>
    </element>
    <element id="Extension.value[x]:valueIdentifier.type.coding.version">
      <path value="Extension.value[x].type.coding.version" />
      <max value="0" />
    </element>
    <element id="Extension.value[x]:valueIdentifier.type.coding.display">
      <path value="Extension.value[x].type.coding.display" />
      <max value="0" />
    </element>
    <element id="Extension.value[x]:valueIdentifier.type.coding.userSelected">
      <path value="Extension.value[x].type.coding.userSelected" />
      <max value="0" />
    </element>
    <element id="Extension.value[x]:valueIdentifier.type.text">
      <path value="Extension.value[x].type.text" />
      <max value="0" />
    </element>
    <element id="Extension.value[x]:valueIdentifier.period">
      <path value="Extension.value[x].period" />
      <max value="0" />
    </element>
    <element id="Extension.value[x]:valueIdentifier.assigner">
      <path value="Extension.value[x].assigner" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>