<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="valueset-history" />
  <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-history" />
  <name value="history" />
  <status value="draft" />
  <date value="2017-04-19T07:44:43+10:00" />
  <publisher value="HL7" />
  <description value="Information on changes made to the Value Set Definition over time and a contained audit trail of all such changes." />
  <fhirVersion value="3.0.1" />
  <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="What has happened over time" />
      <definition value="Information on changes made to the Value Set Definition over time and a contained audit trail of all such changes." />
      <min value="0" />
      <max value="*" />
      <isModifier value="false" />
    </element>
    <element id="Extension.extension:name">
      <path value="Extension.extension" />
      <sliceName value="name" />
      <short value="The name of this set of history entries" />
      <definition value="Label for a set of entries, such as a version." />
      <comment value="Typically, a value set will have a set of history entries for each major publication milestone." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Extension" />
      </type>
      <isModifier value="false" />
    </element>
    <element id="Extension.extension:name.extension">
      <path value="Extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:name.url">
      <path value="Extension.extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="name" />
    </element>
    <element id="Extension.extension:name.valueString">
      <path value="Extension.extension.valueString" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Extension.extension:revision">
      <path value="Extension.extension" />
      <sliceName value="revision" />
      <short value="Audit of all changes for a history entry" />
      <definition value="A list of specific changes, who made them and when." />
      <min value="0" />
      <max value="*" />
      <type>
        <code value="Extension" />
      </type>
      <isModifier value="false" />
    </element>
    <element id="Extension.extension:revision.extension">
      <path value="Extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:revision.extension:date">
      <path value="Extension.extension.extension" />
      <sliceName value="date" />
      <short value="Date the change was made" />
      <definition value="Date the change took place." />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
      </type>
      <isModifier value="false" />
    </element>
    <element id="Extension.extension:revision.extension:date.extension">
      <path value="Extension.extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:revision.extension:date.url">
      <path value="Extension.extension.extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="date" />
    </element>
    <element id="Extension.extension:revision.extension:date.valueDateTime">
      <path value="Extension.extension.extension.valueDateTime" />
      <type>
        <code value="dateTime" />
      </type>
    </element>
    <element id="Extension.extension:revision.extension:id">
      <path value="Extension.extension.extension" />
      <sliceName value="id" />
      <short value="Version marker after the change was made" />
      <definition value="Unique id for the specific change." />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
      </type>
      <isModifier value="false" />
    </element>
    <element id="Extension.extension:revision.extension:id.extension">
      <path value="Extension.extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:revision.extension:id.url">
      <path value="Extension.extension.extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="id" />
    </element>
    <element id="Extension.extension:revision.extension:id.valueString">
      <path value="Extension.extension.extension.valueString" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Extension.extension:revision.extension:author">
      <path value="Extension.extension.extension" />
      <sliceName value="author" />
      <short value="Who made the change" />
      <definition value="Person or device responsible for the change." />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
      </type>
      <isModifier value="false" />
    </element>
    <element id="Extension.extension:revision.extension:author.extension">
      <path value="Extension.extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:revision.extension:author.url">
      <path value="Extension.extension.extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="author" />
    </element>
    <element id="Extension.extension:revision.extension:author.valueString">
      <path value="Extension.extension.extension.valueString" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Extension.extension:revision.extension:notes">
      <path value="Extension.extension.extension" />
      <sliceName value="notes" />
      <short value="Information about the change" />
      <definition value="Description of exactly what was changed and how." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Extension" />
      </type>
      <isModifier value="false" />
    </element>
    <element id="Extension.extension:revision.extension:notes.extension">
      <path value="Extension.extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:revision.extension:notes.url">
      <path value="Extension.extension.extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="notes" />
    </element>
    <element id="Extension.extension:revision.extension:notes.valueString">
      <path value="Extension.extension.extension.valueString" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Extension.extension:revision.url">
      <path value="Extension.extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="revision" />
    </element>
    <element id="Extension.extension:revision.value[x]">
      <path value="Extension.extension.value[x]" />
      <min value="0" />
      <max value="0" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="http://hl7.org/fhir/StructureDefinition/valueset-history" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <min value="0" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>