FHIR Application Feature Framework Implementation Guide
1.0.0 - STU 1

FHIR Application Feature Framework Implementation Guide - Local Development build (v1.0.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

## : Feature Query - XML Representation

Page standards status: Trial-use | Maturity Level: 2

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    <OperationDefinition xmlns="http://hl7.org/fhir">
      <id value="feature-query"/>
      <text>
        <status value="generated"/>
        <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: OperationDefinition feature-query</b></p><a name="feature-query"> </a><a name="hcfeature-query"> </a><p>URL: [base]/$feature-query</p><p>Input parameters Profile:<a href="StructureDefinition-FeatureQueryInputParameters.html">Feature Query Input Parameters</a></p><p>Output parameters Profile:<a href="StructureDefinition-FeatureQueryOutputParameters.html">Feature Query Output Parameters</a></p><h3>Parameters</h3><table class="grid"><tr><td><b>Use</b></td><td><b>Name</b></td><td><b>Scope</b></td><td><b>Cardinality</b></td><td><b>Type</b></td><td><b>Binding</b></td><td><b>Documentation</b></td></tr><tr><td>IN</td><td>feature</td><td/><td>1..1</td><td><a href="http://hl7.org/fhir/R5/parameters.html">Parameters</a></td><td/><td><div><p>The feature that is the subject of the query</p>
    </div></td></tr><tr><td>OUT</td><td>feature</td><td/><td>0..1</td><td><a href="http://hl7.org/fhir/R5/parameters.html">Parameters</a></td><td/><td><div><p>The answer to or any values associated with the queried feature</p>
    </div></td></tr></table></div>
      </text>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
        <valueCode value="fhir"/>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
        <valueInteger value="2">
          <extension
                     url="http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom">
            <valueCanonical
                            value="http://hl7.org/fhir/uv/application-feature/ImplementationGuide/hl7.fhir.uv.application-feature"/>
          </extension>
        </valueInteger>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
        <valueCode value="trial-use">
          <extension
                     url="http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom">
            <valueCanonical
                            value="http://hl7.org/fhir/uv/application-feature/ImplementationGuide/hl7.fhir.uv.application-feature"/>
          </extension>
        </valueCode>
      </extension>
      <url
           value="http://hl7.org/fhir/uv/application-feature/OperationDefinition/feature-query"/>
      <version value="1.0.0"/>
      <name value="FeatureQuery"/>
      <title value="Feature Query"/>
      <status value="active"/>
      <kind value="operation"/>
      <date value="2026-06-04T01:52:45+10:00"/>
      <publisher value="HL7 International / FHIR Infrastructure"/>
      <contact>
        <name value="HL7 International / FHIR Infrastructure"/>
        <telecom>
          <system value="url"/>
          <value value="http://www.hl7.org/Special/committees/fiwg"/>
        </telecom>
      </contact>
      <description
                   value="This operation allows clients to query for features supported by a server. The operation may be invoked via HTTP GET or POST. Details are on the [specification](specification.html#asking-for-features) page."/>
      <jurisdiction>
        <coding>
          <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
          <code value="001"/>
          <display value="World"/>
        </coding>
      </jurisdiction>
      <code value="feature-query"/>
      <system value="true"/>
      <type value="true"/>
      <instance value="false"/>
      <inputProfile
                    value="http://hl7.org/fhir/uv/application-feature/StructureDefinition/FeatureQueryInputParameters"/>
      <outputProfile
                     value="http://hl7.org/fhir/uv/application-feature/StructureDefinition/FeatureQueryOutputParameters"/>
      <parameter>
        <name value="feature"/>
        <use value="in"/>
        <min value="1"/>
        <max value="1"/>
        <documentation value="The feature that is the subject of the query"/>
        <type value="Parameters"/>
      </parameter>
      <parameter>
        <name value="feature"/>
        <use value="out"/>
        <min value="0"/>
        <max value="1"/>
        <documentation
                       value="The answer to or any values associated with the queried feature"/>
        <type value="Parameters"/>
      </parameter>
    </OperationDefinition>