C-CDA on FHIR
2.0.0-ballot - STU 2 Ballot

C-CDA on FHIR, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 2.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/ccda-on-fhir/ and changes regularly. See the Directory of published versions

## : FHIR to C-CDA No Known Allergies - XML Representation

Page standards status: Trial-use

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    <ConceptMap xmlns="http://hl7.org/fhir">
      <id value="FC-NoKnownAllergies"/>
      <text>
        <status value="generated"/>
        <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: ConceptMap FC-NoKnownAllergies</b></p><a name="FC-NoKnownAllergies"> </a><a name="hcFC-NoKnownAllergies"> </a><p>Mapping from https://vsac.nlm.nih.gov/valueset/2.16.840.1.113762.1.4.1186.8/ to https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.88.12.3221.6.2/</p><br/><p><b>Group 1 </b>Mapping from <a href="http://hl7.org/fhir/R4/codesystem-snomedct.html">SNOMED CT (all versions)</a> to <a href="http://hl7.org/fhir/R4/codesystem-snomedct.html">SNOMED CT (all versions)</a></p><table class="grid"><tr><td><b>Source Code</b></td><td><b>Relationship</b></td><td><b>Target Code</b></td><td><b>Comment</b></td></tr><tr><td>429625007 (No known food allergy)</td><td><a href="http://hl7.org/fhir/R5/codesystem-concept-map-relationship.html#equivalent" title="equivalent">is equivalent to</a></td><td>414285001 (Allergy to food)</td><td>Set @negationInd=true</td></tr><tr><td>409137002 (No known drug allergy)</td><td><a href="http://hl7.org/fhir/R5/codesystem-concept-map-relationship.html#equivalent" title="equivalent">is equivalent to</a></td><td>416098002 (Allergy to drug)</td><td>Set @negationInd=true</td></tr><tr><td>716186003 (No known allergy)</td><td><a href="http://hl7.org/fhir/R5/codesystem-concept-map-relationship.html#equivalent" title="equivalent">is equivalent to</a></td><td>419199007 (Allergy to substance)</td><td>Set @negationInd=true</td></tr><tr><td>428607008 (No known environmental allergy)</td><td colspan="2" style="background-color: #efefef">(not mapped)</td><td style="background-color: #efefef">There is no clear match that conforms to valueset binding of C-CDA Allergy Intolerance value. Feedback welcome</td></tr></table></div>
      </text>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
        <valueCode value="cgp"/>
      </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/us/ccda/ImplementationGuide/hl7.fhir.us.ccda"/>
          </extension>
        </valueCode>
      </extension>
      <url value="http://hl7.org/fhir/us/ccda/ConceptMap/FC-NoKnownAllergies"/>
      <version value="2.0.0-ballot"/>
      <name value="FHIRtoCCDANoKnownAllergies"/>
      <title value="FHIR to C-CDA No Known Allergies"/>
      <status value="active"/>
      <experimental value="false"/>
      <date value="2025-07-31T21:42:42+00:00"/>
      <publisher value="HL7 International / Cross-Group Projects"/>
      <contact>
        <name value="HL7 International / Cross-Group Projects"/>
        <telecom>
          <system value="url"/>
          <value value="http://www.hl7.org/Special/committees/cgp"/>
        </telecom>
      </contact>
      <description
                   value="FHIR negated code for No Known Allergies to C-CDA Allergy Intolerance Observation value.

    Note that when placing the target code in the C-CDA AllergyIntolerance Observation, the Observation must have @negationInd=true."/>
      <jurisdiction>
        <coding>
          <system value="urn:iso:std:iso:3166"/>
          <code value="US"/>
        </coding>
      </jurisdiction>
      <sourceUri
                 value="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113762.1.4.1186.8/"/>
      <targetUri
                 value="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.88.12.3221.6.2/"/>
      <group>
        <source value="http://snomed.info/sct"/>
        <target value="http://snomed.info/sct"/>
        <element>
          <code value="429625007"/>
          <display value="No known food allergy"/>
          <target>
            <code value="414285001"/>
            <display value="Allergy to food"/>
            <equivalence value="equivalent"/>
            <comment value="Set @negationInd=true"/>
          </target>
        </element>
        <element>
          <code value="409137002"/>
          <display value="No known drug allergy"/>
          <target>
            <code value="416098002"/>
            <display value="Allergy to drug"/>
            <equivalence value="equivalent"/>
            <comment value="Set @negationInd=true"/>
          </target>
        </element>
        <element>
          <code value="716186003"/>
          <display value="No known allergy"/>
          <target>
            <code value="419199007"/>
            <display value="Allergy to substance"/>
            <equivalence value="equivalent"/>
            <comment value="Set @negationInd=true"/>
          </target>
        </element>
        <element>
          <code value="428607008"/>
          <display value="No known environmental allergy"/>
          <target>
            <equivalence value="unmatched"/>
            <comment
                     value="There is no clear match that conforms to valueset binding of C-CDA Allergy Intolerance value. Feedback welcome"/>
          </target>
        </element>
      </group>
    </ConceptMap>