<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://example.org/fhir/StructureDefinition/Sex" />
  <name value="Sex" />
  <status value="draft" />
  <useContext>
    <code>
      <system value="http://loinc.org" />
      <code value="76689-9" />
    </code>
    <valueCodeableConcept>
      <coding>
        <system value="http://loinc.org" />
        <code value="76689-9" />
      </coding>
      <text value="Sex" />
    </valueCodeableConcept>
  </useContext>
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <context>
    <type value="element" />
    <expression value="Practitioner" />
  </context>
  <context>
    <type value="element" />
    <expression value="Patient" />
  </context>
  <context>
    <type value="element" />
    <expression value="Person" />
  </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://example.org/fhir/StructureDefinition/Sex" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <type>
        <code value="code" />
      </type>
    </element>
  </differential>
</StructureDefinition>