---
type: "codesystem"
title: "Allergy Intolerance Category"
codesystem: "allergy-intolerance-category"
---
# Allergy Intolerance Category

- **Official URL**: http://hl7.org/fhir/allergy-intolerance-category
- **Version**: 6.0.0
- **Status**: active
- **Name**: AllergyIntoleranceCategory
- **Title**: Allergy Intolerance Category
- **Publisher**: HL7 (FHIR Project)
- **Description**: Category of an identified substance associated with allergies or intolerances.
- **Case Sensitive**: true
- **Content**: complete

## Concepts

| Code | Display | Definition |
| --- | --- | --- |
| food | Food | Any substance consumed to provide nutritional support for the body. |
| medication | Medication | Substances administered to achieve a physiological effect. |
| environment | Environment | Any substances that are encountered in the environment, including any substance not already classified as food, medication, or biologic. |
| biologic | Biologic | A preparation that is synthesized from living organisms or their products, especially a human or animal protein, such as a hormone or antitoxin, that is used as a diagnostic, preventive, or therapeutic agent. Examples of biologic medications include: vaccines; allergenic extracts, which are used for both diagnosis and treatment (for example, allergy shots); gene therapies; cellular therapies.  There are other biologic products, such as tissues, which are not typically associated with allergies. |

## CodeSystem XML



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

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="allergy-intolerance-category"/>
  <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-category"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.4.134"/>
  </identifier>
  <identifier>
    <use value="old"/>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.1.124"/>
  </identifier>
  <identifier>
    <use value="old"/>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.2.53"/>
  </identifier>
  <version value="6.0.0"/>
  <name value="AllergyIntoleranceCategory"/>
  <title value="Allergy Intolerance Category"/>
  <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="Category of an identified substance associated with allergies or intolerances."/>
  <caseSensitive value="true"/>
  <valueSet value="http://hl7.org/fhir/ValueSet/allergy-intolerance-category"/>
  <content value="complete"/>
  <concept>
    <code value="food"/>
    <display value="Food"/>
    <definition value="Any substance consumed to provide nutritional support for the body."/>
  </concept>
  <concept>
    <code value="medication"/>
    <display value="Medication"/>
    <definition value="Substances administered to achieve a physiological effect."/>
  </concept>
  <concept>
    <code value="environment"/>
    <display value="Environment"/>
    <definition value="Any substances that are encountered in the environment, including any substance not already classified as food, medication, or biologic."/>
  </concept>
  <concept>
    <code value="biologic"/>
    <display value="Biologic"/>
    <definition value="A preparation that is synthesized from living organisms or their products, especially a human or animal protein, such as a hormone or antitoxin, that is used as a diagnostic, preventive, or therapeutic agent. Examples of biologic medications include: vaccines; allergenic extracts, which are used for both diagnosis and treatment (for example, allergy shots); gene therapies; cellular therapies.  There are other biologic products, such as tissues, which are not typically associated with allergies."/>
  </concept>
</CodeSystem>
```