Cross-Version Extension for AllergyIntolerance.category in R3

Context of Use

This extension may be used in the following contexts:

• element AllergyIntolerance (For version R2)
• extension http://hl7.org/fhir/1.0/StructureDefinition/extension-AllergyIntolerance

Name	Flags	Card.	Type	Description & Constraints
Extension		0..*	Extension	food | medication | environment | biologic
extension		..0
value[x]		1..	code	Binding: todo (required): Category of an identified substance.
url				"http://hl7.org/fhir/3.0/StructureDefinition/extension-AllergyIntolerance.category"
Documentation for this format

{
  "resourceType" : "StructureDefinition",
  "id" : "xv-r3-ait.category",
  "url" : "http://hl7.org/fhir/3.0/StructureDefinition/extension-AllergyIntolerance.category",
  "name" : "XVerExtensionAllergyIntolerance.categoryR3",
  "title" : "Cross-Version Extension for AllergyIntolerance.category in R3",
  "status" : "active",
  "experimental" : false,
  "publisher" : "Health Level Seven International (Patient Care)",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://hl7.org/fhir"
    }]
  },
  {
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/patientcare/index.cfm"
    }]
  }],
  "description" : "Cross-Version Extension for AllergyIntolerance.category. Valid in versions R2\r\n\r\nThis is a valid cross-version extension because the cardinality changed",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "code" : "001"
    }]
  }],
  "fhirVersion" : "5.0.0",
  "kind" : "complex-type",
  "abstract" : false,
  "context" : [{
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "1.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "1.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "AllergyIntolerance"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/1.0/StructureDefinition/extension-AllergyIntolerance"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "path" : "Extension",
      "short" : "food | medication | environment | biologic",
      "definition" : "Category of the identified substance.",
      "comment" : "This data element has been included because it is currently being captured in some clinical systems. This data can be derived from the substance where coding systems are used, and is effectively redundant in that situation.  When searching on category, consider the implications of AllergyIntolerance resources without a category.  For example, when searching on category = medication, medication allergies that don't have a category valued will not be returned.  Refer to [search](search.html) for more information on how to search category with a :missing modifier to get allergies that don't have a category.  Additionally, category should be used with caution because category can be subjective based on the sender.",
      "alias" : ["Category",
      "Type",
      "Reaction Type",
      "Class"],
      "min" : 0,
      "max" : "*",
      "isModifier" : false,
      "mapping" : [{
        "identity" : "v2",
        "map" : "AL1-2"
      },
      {
        "identity" : "rim",
        "map" : "value < IntoleranceValue (Agent)"
      },
      {
        "identity" : "w5",
        "map" : "class"
      }]
    },
    {
      "path" : "Extension.extension",
      "max" : "0"
    },
    {
      "path" : "Extension.value[x]",
      "min" : 1,
      "type" : [{
        "code" : "code"
      }],
      "binding" : {
        "strength" : "required",
        "description" : "Category of an identified substance.",
        "valueSet" : "http://hl7.org/fhir/ValueSet/allergy-intolerance-category|3.0.2"
      }
    },
    {
      "path" : "Extension.url",
      "fixedUri" : "http://hl7.org/fhir/3.0/StructureDefinition/extension-AllergyIntolerance.category"
    }]
  }
}