http://hl7.org/fhir/StructureDefinition/allergyintolerance-substanceExposureRisk|5.2.0

description: The 'substanceExposureRisk' extension is a structured and more flexible alternative to AllergyIntolerance.code for making positive or negative allergy or intolerance statements. This extension provides the capability to make \"no known allergy\" (or \"no risk of adverse reaction\") statements regarding any coded substance/product (including cases when a pre-coordinated \"no allergy to x\" concept for that substance/product does not exist). If the 'substanceExposureRisk' extension is present, the AllergyIntolerance.code element SHALL be omitted.
derivation: constraint
name: AISubstanceExposureRisk
type: Extension
elements:
  extension:
    short: Substance (or pharmaceutical product)
    index: 0
    slicing:
      slices:
        substance:
          match: {}
          schema:
            short: Substance (or pharmaceutical product)
            _required: true
            index: 0
            extensions: {}
            elements:
              extension: {index: 1}
              url:
                pattern: {type: Uri, value: substance}
                index: 2
              value:
                choices: []
                index: 4
            required: [value]
        exposureRisk:
          match: {}
          schema:
            short: known-reaction-risk | no-known-reaction-risk
            _required: true
            index: 5
            extensions: {}
            elements:
              extension: {index: 6}
              url:
                pattern: {type: Uri, value: exposureRisk}
                index: 7
              value:
                choices: []
                index: 9
            required: [value]
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/allergyintolerance-substanceExposureRisk'}
    index: 10
  value:
    choices: []
    index: 12
extensions:
  substance:
    url: null
    short: Substance (or pharmaceutical product)
    _required: true
    index: 0
    extensions: {}
    elements:
      extension: {index: 1}
      url:
        pattern: {type: Uri, value: substance}
        index: 2
      value:
        choices: []
        index: 4
    required: [value]
  exposureRisk:
    url: null
    short: known-reaction-risk | no-known-reaction-risk
    _required: true
    index: 5
    extensions: {}
    elements:
      extension: {index: 6}
      url:
        pattern: {type: Uri, value: exposureRisk}
        index: 7
      value:
        choices: []
        index: 9
    required: [value]
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/allergyintolerance-substanceExposureRisk
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.2.0
required: [extension]