<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="http://example.org/fhir/StructureDefinition/NationalityExtension" />
  <name value="NationalityExtension" />
  <status value="active" />
  <fhirVersion value="4.0.1" />
  <mapping>
    <identity value="rim" />
    <uri value="http://hl7.org/v3" />
    <name value="RIM Mapping" />
  </mapping>
  <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">
      <path value="Extension" />
      <short value="Nationality" />
      <definition value="Defines the nationality of a patient" />
      <max value="1" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://example.org/fhir/StructureDefinition/NationalityExtension" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <short value="Nationality" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <binding>
        <strength value="extensible" />
        <description value="Nationality" />
      </binding>
    </element>
  </differential>
</StructureDefinition>