HL7 Terminology (THO)
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This page is part of the HL7 Terminology (v7.2.0: Release) 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: StateChangeReason

Official URL: http://terminology.hl7.org/CodeSystem/state-change-reason Version: 2.0.0
Active as of 2026-03-05 Maturity Level: 1 Responsible: Health Level Seven International Computable Name: StateChangeReason
Other Identifiers: OID:2.16.840.1.113883.4.642.1.0

Copyright/Legal: 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

Indicates why the state of the subject changed.

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

Last updated: 2020-04-09 21:10:28+0000

Properties

This code system defines the following properties for its concepts

NameCodeURITypeDescription
Status status http://hl7.org/fhir/concept-properties#status code Designation of a concept's state. Normally is not populated unless the state is retired.

Concepts

This case-sensitive code system http://terminology.hl7.org/CodeSystem/state-change-reason defines the following codes:

CodeDisplayDefinitionDeprecated
unable-to-participate Unable to Participate The subject (ResearchSubject) is not able to take part in the ResearchStudy. Examples: subject has moved away; subject cannot drive and therefore unable to participate, etc.
unwilling-to-participate Unwilling to Participate The subject (ResearchSubject) is refusing to take part in the ResearchStudy. Note: Subject refusal is a synonymous term and is used in some studies.
screening-failure Screening Failure The failure of the potential subject (ResearchSubject) of meeting one or more criteria required for participation in a trial.
intervention-complete Intervention Complete The subject (ResearchSubject) has finished the planned protocol-specified treatment phase.
follow-up-complete Follow-up Complete The subject (ResearchSubject) has finished the planned protocol-specified follow-up phase.
adverse-event Adverse Event The subject (ResearchSubject) has experienced any unfavorable or unintended disease, sign, or symptom that is temporally associated with the use of a medical treatment or procedure and that may or may not be considered related to the medical treatment or procedure.
consent-withdrawn Consent Withdrawn The subject (ResearchSubject) has revoked permission to participate in the study or one or more components of the study.
non-compliance Non-compliance The subject (ResearchSubject) has failed to follow medical advice, take medication as directed, or adhere to a prescribed course of treatment.
informedConsentSigned Informed consent signed The subject (ResearchSubject) has signed informed consent.
intOrObsComplete intervention or observation complete intervention or observation complete. Deprecated
death Death The subject (ResearchSubject) has died.

Description of the above table(s).


History

DateActionCustodianAuthorComment
2026-06-13reviseBRRKhalid ShahinChange the StateChangeReason CodeSystem terms for ResearchSubject; up-584
2026-03-05reviseTSMGMarc DuteauSet a bunch of draft code systems to active; up-784
2023-11-14reviseTSMGMarc DuteauAdd standard copyright and contact to internal content; up-476
2020-10-14reviseVocabulary WGGrahame GrieveReset Version after migration to UTG
2020-05-06reviseVocabulary WGTed KleinMigrated to the UTG maintenance environment and publishing tooling.