LOINCActiveObservation

LOINC Code 82779-0: Trial participation end date

82779-0 is a LOINC code used to identify Trial participation end date in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Trial participation end date. It is commonly used with the system or sample type ^Patient.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Trial participation end date. It is commonly used with the system or sample type ^Patient.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Observation

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Trial participation end date
  • CLINTRIAL; Point in time; QNT; Quan; Quant; Quantitative; Random; Trial partic end date

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Trial participation end dateTrial partic end dateCLINTRIALDatePt^PatientQn

Frequently asked questions

Code details

Code82779-0
SystemLOINC
Display nameTrial participation end date
Short nameTrial partic end date
ComponentTrial participation end date
PropertyDate
TimingPt
System (specimen)^Patient
ScaleQn
ClassCLINTRIAL
Example unitsMMDDYY
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.58
Last changed2.58

Part names

Trial participation end dateDatePt^PatientQnPoint in time (spot)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 82779-0 | HealthAssure