reaction-event-certainty
type: CodeSystem
node role: treeRoot
id:
  v: reaction-event-certainty
meta:
  last updated:
    v: 2020-04-09T21:10:28.568+00:00
language:
  v: en
text:
  status:
    v: generated
  div:
    v: Generated Narrative: CodeSystem reaction-event-certainty Last updated: 2020-04-09 21:10:28+0000 This case-sensitive code system http://terminology.hl7.org/CodeSystem/reaction-event-certainty defines the following codes: Code Display Definition 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.
url:
  v: http://terminology.hl7.org/CodeSystem/reaction-event-certainty
identifier:
  system:
    v: urn:ietf:rfc:3986
  value:
    v: urn:oid:2.16.840.1.113883.4.642.1.1276
version:
  v: 2.0.0
name:
  v: AllergyIntoleranceCertainty
title:
  v: AllergyIntoleranceCertainty
status:
  v: active
experimental:
  v: false
date:
  v: 2026-03-05
publisher:
  v: Health Level Seven International
contact:
  telecom:
    system:
      v: url
    value:
      v: http://hl7.org
  telecom:
    system:
      v: email
description:
  v: Statement about the degree of clinical certainty that a specific substance was the cause of the manifestation in a reaction event.
copyright:
  v: This material derives from the HL7 Terminology (THO). THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license.html
case sensitive:
  v: true
value set:
  v: http://terminology.hl7.org/ValueSet/reaction-event-certainty
  link: http://terminology.hl7.org/ValueSet/reaction-event-certainty
content:
  v: complete
concept:
  code:
    v: unlikely
  display:
    v: Unlikely
  definition:
    v: There is a low level of clinical certainty that the reaction was caused by the identified substance.
concept:
  code:
    v: likely
  display:
    v: Likely
  definition:
    v: There is a high level of clinical certainty that the reaction was caused by the identified substance.
concept:
  code:
    v: confirmed
  display:
    v: Confirmed
  definition:
    v: 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.
concept:
  code:
    v: unknown
  display:
    v: Unknown
  definition:
    v: The clinical certainty that the reaction was caused by the identified substance is unknown. It is an explicit assertion that certainty is not known.