<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="valueset-usage" />
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="vocab" />
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="1" />
  </extension>
  <url value="http://hl7.org/fhir/StructureDefinition/valueset-usage" />
  <name value="usage" />
  <status value="draft" />
  <publisher value="HL7" />
  <description value="Consumers of the value set and the implementations, projects or standards that the author has utilized the value set in." />
  <fhirVersion value="3.0.0" />
  <mapping>
    <identity value="rim" />
    <uri value="http://hl7.org/v3" />
    <name value="RIM Mapping" />
  </mapping>
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="ValueSet" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <short value="Who has used and how?" />
      <definition value="Consumers of the value set and the implementations, projects or standards that the author has utilized the value set in." />
      <comment value="This is likely to be a point-in-time view and should not be considered an authoritative listing of all uses of the value set." />
      <min value="0" />
      <max value="*" />
      <isModifier value="false" />
    </element>
    <element id="Extension.extension:user">
      <path value="Extension.extension" />
      <sliceName value="user" />
      <short value="A consumer of or client for the value set" />
      <definition value="This is most likely to be an organization but can be an individual. It would not be a program, that information should be recorded in the usage.use." />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
      </type>
      <isModifier value="false" />
    </element>
    <element id="Extension.extension:user.extension">
      <path value="Extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:user.url">
      <path value="Extension.extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="user" />
    </element>
    <element id="Extension.extension:user.valueString">
      <path value="Extension.extension.valueString" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Extension.extension:use">
      <path value="Extension.extension" />
      <sliceName value="use" />
      <short value="Implementation/project/standard that uses value set" />
      <definition value="A descriptive name of the project or standard in which the value set is used." />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
      </type>
      <isModifier value="false" />
    </element>
    <element id="Extension.extension:use.extension">
      <path value="Extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:use.url">
      <path value="Extension.extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="use" />
    </element>
    <element id="Extension.extension:use.valueString">
      <path value="Extension.extension.valueString" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="http://hl7.org/fhir/StructureDefinition/valueset-usage" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <min value="0" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>