HL7 Terminology (THO)
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: StateChangeReason

Active as of 2026-03-05 Maturity Level: 1

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<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="state-change-reason"/>
  <meta>
    <lastUpdated value="2020-04-09T21:10:28.568+00:00"/>
  </meta>
  <language value="en"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem state-change-reason</b></p><a name="state-change-reason"> </a><a name="hcstate-change-reason"> </a><div style="display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%"><p style="margin-bottom: 0px">Last updated: 2020-04-09 21:10:28+0000</p></div><p><b>Properties</b></p><p><b>This code system defines the following properties for its concepts</b></p><table class="grid"><tr><td><b>Name</b></td><td><b>Code</b></td><td><b>URI</b></td><td><b>Type</b></td><td><b>Description</b></td></tr><tr><td>Status</td><td>status</td><td>http://hl7.org/fhir/concept-properties#status</td><td>code</td><td>Designation of a concept's state. Normally is not populated unless the state is retired.</td></tr></table><p><b>Concepts</b></p><p>This case-sensitive code system <code>http://terminology.hl7.org/CodeSystem/state-change-reason</code> defines the following codes:</p><table class="codes"><tr><td style="white-space:nowrap"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td><td><b>Deprecated</b></td></tr><tr><td style="white-space:nowrap">unable-to-participate<a name="state-change-reason-unable-to-participate"> </a></td><td>Unable to Participate</td><td>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.</td><td/></tr><tr><td style="white-space:nowrap">unwilling-to-participate<a name="state-change-reason-unwilling-to-participate"> </a></td><td>Unwilling to Participate</td><td>The subject (ResearchSubject) is refusing to take part in the ResearchStudy. Note: Subject refusal is a synonymous term and is used in some studies.</td><td/></tr><tr><td style="white-space:nowrap">screening-failure<a name="state-change-reason-screening-failure"> </a></td><td>Screening Failure</td><td>The failure of the potential subject (ResearchSubject) of meeting one or more criteria required for participation in a trial.</td><td/></tr><tr><td style="white-space:nowrap">intervention-complete<a name="state-change-reason-intervention-complete"> </a></td><td>Intervention Complete</td><td>The subject (ResearchSubject) has finished the planned protocol-specified treatment phase.</td><td/></tr><tr><td style="white-space:nowrap">follow-up-complete<a name="state-change-reason-follow-up-complete"> </a></td><td>Follow-up Complete</td><td>The subject (ResearchSubject) has finished the planned protocol-specified follow-up phase.</td><td/></tr><tr><td style="white-space:nowrap">adverse-event<a name="state-change-reason-adverse-event"> </a></td><td>Adverse Event</td><td>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.</td><td/></tr><tr><td style="white-space:nowrap">consent-withdrawn<a name="state-change-reason-consent-withdrawn"> </a></td><td>Consent Withdrawn</td><td>The subject (ResearchSubject) has revoked permission to participate in the study or one or more components of the study.</td><td/></tr><tr><td style="white-space:nowrap">non-compliance<a name="state-change-reason-non-compliance"> </a></td><td>Non-compliance</td><td>The subject (ResearchSubject) has failed to follow medical advice, take medication as directed, or adhere to a prescribed course of treatment.</td><td/></tr><tr><td style="white-space:nowrap">informedConsentSigned<a name="state-change-reason-informedConsentSigned"> </a></td><td>Informed consent signed</td><td>The subject (ResearchSubject) has signed informed consent.</td><td/></tr><tr style="background-color: #ffeeee"><td style="white-space:nowrap">intOrObsComplete<a name="state-change-reason-intOrObsComplete"> </a></td><td>intervention or observation complete</td><td>intervention or observation complete.</td><td>Deprecated</td></tr><tr><td style="white-space:nowrap">death<a name="state-change-reason-death"> </a></td><td>Death</td><td>The subject (ResearchSubject) has died.</td><td/></tr></table></div>
  </text>
  <extension
             url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="brr"/>
  </extension>
  <extension
             url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="1"/>
  </extension>
  <url value="http://terminology.hl7.org/CodeSystem/state-change-reason"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.1.0"/>
  </identifier>
  <version value="2.0.0"/>
  <name value="StateChangeReason"/>
  <title value="StateChangeReason"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2026-03-05"/>
  <publisher value="Health Level Seven International"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://hl7.org"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="hq@HL7.org"/>
    </telecom>
  </contact>
  <description value="Indicates why the state of the subject changed."/>
  <copyright
             value="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"/>
  <caseSensitive value="true"/>
  <valueSet value="http://terminology.hl7.org/ValueSet/state-change-reason"/>
  <content value="complete"/>
  <property>
    <code value="status"/>
    <uri value="http://hl7.org/fhir/concept-properties#status"/>
    <description
                 value="Designation of a concept's state. Normally is not populated unless the state is retired."/>
    <type value="code"/>
  </property>
  <concept>
    <code value="unable-to-participate"/>
    <display value="Unable to Participate"/>
    <definition
                value="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."/>
  </concept>
  <concept>
    <code value="unwilling-to-participate"/>
    <display value="Unwilling to Participate"/>
    <definition
                value="The subject (ResearchSubject) is refusing to take part in the ResearchStudy. Note: Subject refusal is a synonymous term and is used in some studies."/>
  </concept>
  <concept>
    <code value="screening-failure"/>
    <display value="Screening Failure"/>
    <definition
                value="The failure of the potential subject (ResearchSubject) of meeting one or more criteria required for participation in a trial."/>
  </concept>
  <concept>
    <code value="intervention-complete"/>
    <display value="Intervention Complete"/>
    <definition
                value="The subject (ResearchSubject) has finished the planned protocol-specified treatment phase."/>
  </concept>
  <concept>
    <code value="follow-up-complete"/>
    <display value="Follow-up Complete"/>
    <definition
                value="The subject (ResearchSubject) has finished the planned protocol-specified follow-up phase."/>
  </concept>
  <concept>
    <code value="adverse-event"/>
    <display value="Adverse Event"/>
    <definition
                value="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."/>
  </concept>
  <concept>
    <code value="consent-withdrawn"/>
    <display value="Consent Withdrawn"/>
    <definition
                value="The subject (ResearchSubject) has revoked permission to participate in the study or one or more components of the study."/>
  </concept>
  <concept>
    <code value="non-compliance"/>
    <display value="Non-compliance"/>
    <definition
                value="The subject (ResearchSubject) has failed to follow medical advice, take medication as directed, or adhere to a prescribed course of treatment."/>
  </concept>
  <concept>
    <code value="informedConsentSigned"/>
    <display value="Informed consent signed"/>
    <definition
                value="The subject (ResearchSubject) has signed informed consent."/>
    <designation>
      <use>
        <system value="http://snomed.info/sct"/>
        <code value="900000000000013009"/>
        <display value="Synonym"/>
      </use>
      <value value="Informed Consent"/>
    </designation>
  </concept>
  <concept>
    <code value="intOrObsComplete"/>
    <display value="intervention or observation complete"/>
    <definition value="intervention or observation complete."/>
    <property>
      <code value="deprecationDate"/>
      <valueDateTime value="2025-04-17"/>
    </property>
    <property>
      <code value="replacedBy"/>
      <valueCode value="intervention-complete"/>
    </property>
  </concept>
  <concept>
    <code value="death"/>
    <display value="Death"/>
    <definition value="The subject (ResearchSubject) has died."/>
  </concept>
</CodeSystem>