<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="4c86ee70-90ca-4fd8-ba11-f2bf092ad648" />
  <url value="https://fhir.nhs.uk/StructureDefinition/Extension-replacementOf" />
  <name value="ExtensionreplacementOf" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <context>
    <type value="element" />
    <expression value="MessageHeader" />
  </context>
  <context>
    <type value="element" />
    <expression value="Claim" />
  </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://fhir.nhs.uk/StructureDefinition/Extension-replacementOf" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <short value="Previous Bundle.identifier" />
      <definition value="Should be populated in update messages" />
      <min value="1" />
      <type>
        <code value="Identifier" />
      </type>
    </element>
    <element id="Extension.value[x].value">
      <path value="Extension.value[x].value" />
      <min value="1" />
    </element>
  </differential>
</StructureDefinition>