<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="allergy-intolerance-criticality"/><meta><lastUpdated value="2026-04-03T20:06:10.198+00:00"/></meta><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem allergy-intolerance-criticality</b></p><a name="allergy-intolerance-criticality"> </a><a name="hcallergy-intolerance-criticality"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/allergy-intolerance-criticality</code> defines the following codes:</p><table class="codes"><tr><td style="white-space:nowrap"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style="white-space:nowrap">low<a name="allergy-intolerance-criticality-low"> </a></td><td>Low Risk</td><td>Worst case result of a future exposure is not assessed to be life-threatening or having high potential for organ system failure.</td></tr><tr><td style="white-space:nowrap">high<a name="allergy-intolerance-criticality-high"> </a></td><td>High Risk</td><td>Worst case result of a future exposure is assessed to be life-threatening or having high potential for organ system failure.</td></tr><tr><td style="white-space:nowrap">unable-to-assess<a name="allergy-intolerance-criticality-unable-to-assess"> </a></td><td>Unable to Assess Risk</td><td>Unable to assess the worst case result of a future exposure.</td></tr></table></div></text><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"><valueCode value="pc"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"><valueCode value="normative"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"><valueInteger value="3"/></extension><url value="http://hl7.org/fhir/allergy-intolerance-criticality"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.4.130"/></identifier><identifier><use value="old"/><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.1.120"/></identifier><identifier><use value="old"/><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.2.51"/></identifier><version value="6.0.0-ballot4"/><name value="AllergyIntoleranceCriticality"/><title value="Allergy Intolerance Criticality"/><status value="active"/><experimental value="false"/><date value="2021-01-05T10:01:24+11:00"/><publisher value="HL7 (FHIR Project)"/><contact><telecom><system value="url"/><value value="http://hl7.org/fhir"/></telecom><telecom><system value="email"/><value value="fhir@lists.hl7.org"/></telecom></contact><description value="Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance."/><jurisdiction><coding><system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/><code value="001"/><display value="World"/></coding></jurisdiction><caseSensitive value="true"/><valueSet value="http://hl7.org/fhir/ValueSet/allergy-intolerance-criticality"/><content value="complete"/><concept><code value="low"/><display value="Low Risk"/><definition value="Worst case result of a future exposure is not assessed to be life-threatening or having high potential for organ system failure."/></concept><concept><code value="high"/><display value="High Risk"/><definition value="Worst case result of a future exposure is assessed to be life-threatening or having high potential for organ system failure."/></concept><concept><code value="unable-to-assess"/><display value="Unable to Assess Risk"/><definition value="Unable to assess the worst case result of a future exposure."/></concept></CodeSystem>