{
  "resourceType": "CodeSystem",
  "id": "allergy-intolerance-type",
  "meta": {
    "lastUpdated": "2026-05-25T22:13:44.118+00:00"
  },
  "text": {
    "status": "generated",
    "div": "\u003cdiv xmlns\u003d\"http://www.w3.org/1999/xhtml\"\u003e\u003cp class\u003d\"res-header-id\"\u003e\u003cb\u003eGenerated Narrative: CodeSystem allergy-intolerance-type\u003c/b\u003e\u003c/p\u003e\u003ca name\u003d\"allergy-intolerance-type\"\u003e \u003c/a\u003e\u003ca name\u003d\"hcallergy-intolerance-type\"\u003e \u003c/a\u003e\u003cp\u003eThis case-sensitive code system \u003ccode\u003ehttp://hl7.org/fhir/allergy-intolerance-type\u003c/code\u003e defines the following codes:\u003c/p\u003e\u003ctable class\u003d\"codes\"\u003e\u003ctr\u003e\u003ctd style\u003d\"white-space:nowrap\"\u003e\u003cb\u003eCode\u003c/b\u003e\u003c/td\u003e\u003ctd\u003e\u003cb\u003eDisplay\u003c/b\u003e\u003c/td\u003e\u003ctd\u003e\u003cb\u003eDefinition\u003c/b\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd style\u003d\"white-space:nowrap\"\u003eallergy\u003ca name\u003d\"allergy-intolerance-type-allergy\"\u003e \u003c/a\u003e\u003c/td\u003e\u003ctd\u003eAllergy\u003c/td\u003e\u003ctd\u003eA propensity for hypersensitive reaction(s) to a substance.  These reactions are most typically type I hypersensitivity, plus other \u0026quot;allergy-like\u0026quot; reactions, including pseudoallergy.\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd style\u003d\"white-space:nowrap\"\u003eintolerance\u003ca name\u003d\"allergy-intolerance-type-intolerance\"\u003e \u003c/a\u003e\u003c/td\u003e\u003ctd\u003eIntolerance\u003c/td\u003e\u003ctd\u003eA propensity for adverse reactions to a substance that is judged to be not allergic or \u0026quot;allergy-like\u0026quot;.  These reactions are typically (but not necessarily) non-immune.  They are to some degree idiosyncratic and/or patient-specific (i.e. are not a reaction that is expected to occur with most or all patients given similar circumstances).\u003c/td\u003e\u003c/tr\u003e\u003c/table\u003e\u003c/div\u003e"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "pc"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode": "normative"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 3
    }
  ],
  "url": "http://hl7.org/fhir/allergy-intolerance-type",
  "identifier": [
    {
      "system": "urn:ietf:rfc:3986",
      "value": "urn:oid:2.16.840.1.113883.4.642.4.132"
    },
    {
      "use": "old",
      "system": "urn:ietf:rfc:3986",
      "value": "urn:oid:2.16.840.1.113883.4.642.1.122"
    },
    {
      "use": "old",
      "system": "urn:ietf:rfc:3986",
      "value": "urn:oid:2.16.840.1.113883.4.642.2.52"
    }
  ],
  "version": "6.0.0-ballot4",
  "name": "AllergyIntoleranceType",
  "title": "Allergy Intolerance Type",
  "status": "active",
  "experimental": false,
  "date": "2021-01-05T10:01:24+11:00",
  "publisher": "HL7 (FHIR Project)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        },
        {
          "system": "email",
          "value": "fhir@lists.hl7.org"
        }
      ]
    }
  ],
  "description": "Identification of the underlying physiological mechanism for a Reaction Risk.",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code": "001",
          "display": "World"
        }
      ]
    }
  ],
  "caseSensitive": true,
  "valueSet": "http://hl7.org/fhir/ValueSet/allergy-intolerance-type",
  "content": "complete",
  "concept": [
    {
      "code": "allergy",
      "display": "Allergy",
      "definition": "A propensity for hypersensitive reaction(s) to a substance.  These reactions are most typically type I hypersensitivity, plus other \"allergy-like\" reactions, including pseudoallergy."
    },
    {
      "code": "intolerance",
      "display": "Intolerance",
      "definition": "A propensity for adverse reactions to a substance that is judged to be not allergic or \"allergy-like\".  These reactions are typically (but not necessarily) non-immune.  They are to some degree idiosyncratic and/or patient-specific (i.e. are not a reaction that is expected to occur with most or all patients given similar circumstances)."
    }
  ]
}