FHIR Extensions Pack
5.1.0 - 5.1.0 (April 2024) International flag

This page is part of the FHIR Core Extensions Registry (v5.1.0: Release 5.1) based on FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

CodeSystem: AllergyIntolerance Certainty CodeSystem

Official URL: http://hl7.org/fhir/reaction-event-certainty Version: 5.1.0
Standards status: Trial-use Maturity Level: 2 Responsible: HL7 International / Patient Care Computable Name: AllergyIntoleranceCertainty
Other Identifiers: OID:2.16.840.1.113883.4.642.1.1276, OID:2.16.840.1.113883.4.642.1.860 (use: old), OID:2.16.840.1.113883.4.642.2.54 (use: old)

AllergyIntoleranceCertainty

This Code system is referenced in the content logical definition of the following value sets:

Changes since version 1.0.0:

  • The resource metadata has changed (title, publisher)

    • This case-sensitive code system http://hl7.org/fhir/reaction-event-certainty defines the following codes:

    CodeDisplayDefinition
    unlikely Unlikely There is a low level of clinical certainty that the reaction was caused by the identified substance.
    likely Likely There is a high level of clinical certainty that the reaction was caused by the identified substance.
    confirmed Confirmed There is a very high level of clinical certainty that the reaction was due to the identified substance, which may include clinical evidence by testing or rechallenge.
    unknown Unknown The clinical certainty that the reaction was caused by the identified substance is unknown. It is an explicit assertion that certainty is not known.