FHIR to OMOP FHIR IG, published by HL7 International / Biomedical Research and Regulation. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-omop-ig/ and changes regularly. See the Directory of published versions

• Narrative Content
• XML
• JSON
• TTL

: AllergyIntolerance substance codes to OMOP

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<ConceptMap xmlns="http://hl7.org/fhir">
  <id value="AllergySubstanceType"/>
  <language value="en"/>
  <text>
    <status value="generated"/>
    <div xml:lang="en" xmlns="http://www.w3.org/1999/xhtml" lang="en"><p class="res-header-id"><b>Generated Narrative: ConceptMap AllergySubstanceType</b></p><a name="AllergySubstanceType"> </a><a name="hcAllergySubstanceType"> </a><div style="display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%"><p style="margin-bottom: 0px">Language: en</p></div><p>Mapping from (not specified) to (not specified)</p><br/><p><b>Group 1 </b>Mapping from <code>http://www.nlm.nih.gov/research/umls/rxnorm</code> (RxNorm) to <code>https://fhir-terminology.ohdsi.org</code> (OHDSI Standardized Vocabularies)</p><table class="grid"><tr><td><b>Source Code</b></td><td><b>Relationship</b></td><td><b>Target Code</b></td></tr><tr><td>227493005</td><td><a href="http://hl7.org/fhir/R5/codesystem-concept-map-relationship.html#equivalent" title="equivalent">is equivalent to</a></td><td>4026477 (Cashew nut)</td></tr><tr><td>323389000</td><td><a href="http://hl7.org/fhir/R5/codesystem-concept-map-relationship.html#equivalent" title="equivalent">is equivalent to</a></td><td>1728416 (benzylpenicillin)</td></tr><tr><td>7980 (penicillin G)</td><td><a href="http://hl7.org/fhir/R5/codesystem-concept-map-relationship.html#equivalent" title="equivalent">is equivalent to</a></td><td>1728416 (benzylpenicillin)</td></tr></table></div>
  </text>
  <extension
             url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="brr"/>
  </extension>
  <extension
             url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="informative">
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom">
        <valueCanonical
                        value="http://hl7.org/fhir/uv/omop/ImplementationGuide/hl7.fhir.uv.omop"/>
      </extension>
    </valueCode>
  </extension>
  <url value="http://hl7.org/fhir/uv/omop/ConceptMap/AllergySubstanceType"/>
  <version value="1.0.0"/>
  <name value="AllergySubstanceTypeOMOPMapping"/>
  <title value="AllergyIntolerance substance codes to OMOP"/>
  <status value="draft"/>
  <experimental value="true"/>
  <date value="2026-04-02T22:51:15+00:00"/>
  <publisher value="HL7 International / Biomedical Research and Regulation"/>
  <contact>
    <name value="HL7 International / Biomedical Research and Regulation"/>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/rcrim"/>
    </telecom>
  </contact>
  <description
               value="An example mapping of FHIR AllergyIntolerance substance code to OMOP concept ids"/>
  <jurisdiction>
    <coding>
      <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
      <code value="001"/>
      <display value="World"/>
    </coding>
  </jurisdiction>
  <group>
    <source value="http://www.nlm.nih.gov/research/umls/rxnorm"/>
    <target value="https://fhir-terminology.ohdsi.org"/>
    <element>
      <code value="227493005"/>
      <target>
        <code value="4026477"/>
        <display value="Cashew nut"/>
        <relationship value="equivalent"/>
      </target>
    </element>
    <element>
      <code value="323389000"/>
      <target>
        <code value="1728416"/>
        <display value="benzylpenicillin"/>
        <relationship value="equivalent"/>
      </target>
    </element>
    <element>
      <code value="7980"/>
      <target>
        <code value="1728416"/>
        <display value="benzylpenicillin"/>
        <relationship value="equivalent"/>
      </target>
    </element>
  </group>
</ConceptMap>