Generated Narrative: ValueSet v3-ClinicalResearchEventReason Language: en Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-ActReason Code Display Definition RET retest **Definition:**The event occurred so that a test or observation performed at a prior event could be performed again due to conditions set forth in the protocol. SCH scheduled **Definition:**The event occurred due to it being scheduled in the research protocol. TRM termination **Definition:**The event occurred in order to terminate the subject's participation in the study. UNS unscheduled **Definition:**The event that occurred was initiated by a study participant (e.g. the subject or the investigator), and did not occur for protocol reasons.
**Definition:**Specifies the reason that an event occurred in a clinical research study.
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