---
type: "codesystem"
title: "Allergy Intolerance Criticality"
codesystem: "allergy-intolerance-criticality"
---
# Allergy Intolerance Criticality

- **Official URL**: http://hl7.org/fhir/allergy-intolerance-criticality
- **Version**: 6.0.0
- **Status**: active
- **Name**: AllergyIntoleranceCriticality
- **Title**: Allergy Intolerance Criticality
- **Publisher**: HL7 (FHIR Project)
- **Description**: Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance.
- **Case Sensitive**: true
- **Content**: complete

## Concepts

| Code | Display | Definition |
| --- | --- | --- |
| low | Low Risk | Worst case result of a future exposure is not assessed to be life-threatening or having high potential for organ system failure. |
| high | High Risk | Worst case result of a future exposure is assessed to be life-threatening or having high potential for organ system failure. |
| unable-to-assess | Unable to Assess Risk | Unable to assess the worst case result of a future exposure. |

## CodeSystem XML



```xml
<?xml version="1.0" encoding="UTF-8"?>

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="allergy-intolerance-criticality"/>
  <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"/>
  <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."/>
  <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>
```