<ValueSet xmlns="http://hl7.org/fhir">
  <url value="https://example.nhs.uk/fhir/ValueSet/birthsex-mf-only" />
  <version value="1.0.0" />
  <name value="BirthSexMFOnly" />
  <status value="active" />
  <publisher value="NHS England" />
  <description value="Restricted birth sex ValueSet allowing only Male and Female" />
  <compose>
    <include>
      <system value="http://terminology.hl7.org/CodeSystem/v3-AdministrativeGender" />
      <concept>
        <code value="M" />
        <display value="Male" />
      </concept>
      <concept>
        <code value="F" />
        <display value="Female" />
      </concept>
    </include>
  </compose>
</ValueSet>