FHIR Extensions Pack
5.3.0-ballot-tc1 - (September 2025 Ballot) International flag

FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.3.0-ballot-tc1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-extensions/ and changes regularly. See the Directory of published versions

Extension: AllergyIntolerance Certainty

Official URL: http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty Version: 5.3.0-ballot-tc1
Standards status: Trial-use Maturity Level: 3 Responsible: HL7 International / Patient Care Computable Name: AICertainty
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1293

Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event.

Context of Use

This extension may be used on the following element(s)

Usage info

Usages:

  • This Extension is not used by any profiles in this Implementation Guide

You can also check for usages in the FHIR IG Statistics

Changes since version 5.2.0:

  • No changes

    • Formal Views of Extension Content

    Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

    This structure is derived from Extension

    Summary

    Simple Extension with the type CodeableConcept: Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event.

    Maturity: 3

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Certainty that the substance was the cause of the manifestation
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty"
    ... value[x] 1..1 CodeableConcept Value of extension
    Binding: AllergyIntoleranceCertainty (extensible): Statement about the degree of clinical certainty that a specific substance was the cause of the manifestation in a reaction event.

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Certainty that the substance was the cause of the manifestation
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty"

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension with the type CodeableConcept: Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event.

    Maturity: 3

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Certainty that the substance was the cause of the manifestation
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty"
    ... value[x] 1..1 CodeableConcept Value of extension
    Binding: AllergyIntoleranceCertainty (extensible): Statement about the degree of clinical certainty that a specific substance was the cause of the manifestation in a reaction event.

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Certainty that the substance was the cause of the manifestation
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty"

    doco Documentation for this format

     

    Other representations of profile: CSV, Excel, Schematron

    Terminology Bindings

    PathConformanceValueSetURI
    Extension.value[x]extensibleAllergyIntoleranceCertainty(a valid code from AllergyIntolerance Certainty CodeSystem)
    http://hl7.org/fhir/ValueSet/reaction-event-certainty
    From this IG

    Constraints

    IdGradePath(s)DetailsRequirements
    ele-1error**ALL** elementsAll FHIR elements must have a @value or children
    : hasValue() or (children().count() > id.count())
    ext-1error**ALL** extensionsMust have either extensions or value[x], not both
    : extension.exists() != value.exists()

    R4B

    The extension is not used in R4B

    • Duplicate Resource http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty of type StructureDefinition (existing version 4.3.0, new version 5.3.0-ballot-tc1)

    R4

    The extension is not used in R4

    • Duplicate Resource http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty of type StructureDefinition (existing version 4.0.1, new version 5.3.0-ballot-tc1)

    R3

    The extension is not used in R3

    • Duplicate Resource http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty of type StructureDefinition (existing version null, new version 5.3.0-ballot-tc1)

    Search Parameters for this Extension

    (none found)