<status value="draft" /> <date value="2017-04-19T07:44:43+10:00" /> <publisher value="HL7" /> <description value="A comment that explains how this code is used in this context (where the value set is expected to be used)." /> <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="CodeSystem.concept" /> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="Comment about the use of this code in this context" /> <definition value="A comment that explains how this code is used in this context (where the value set is expected to be used)." /> <comment value="This is used in various FHIR value sets to make comments on how particular codes are used when the formal definition is a little abstract or vague, but it's not clear whether it belongs in the actual value set resource." /> <min value="0" /> <max value="1" /> <isModifier value="false" /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <max value="0" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <type> <code value="uri" /> </type> <fixedUri value="http://hl7.org/fhir/StructureDefinition/codesystem-comments" /> </element> <element id="Extension.valueString"> <path value="Extension.valueString" /> <type> <code value="string" /> </type> </element> </differential> </StructureDefinition>