<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://fhir.nhs.uk/StructureDefinition/NHSDigital-Flag" />
  <name value="NHSDigitalFlag" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Flag" />
  <baseDefinition value="https://fhir.hl7.org.uk/StructureDefinition/UKCore-Flag" />
  <derivation value="constraint" />
  <differential>
    <element id="Flag.subject">
      <path value="Flag.subject" />
      <type>
        <code value="Reference" />
        <targetProfile value="https://fhir.nhs.uk/StructureDefinition/NHSDigital-Patient" />
        <aggregation value="referenced" />
      </type>
    </element>
  </differential>
</StructureDefinition>