What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActive

LOINC Code 21992-3: Sequence numberanddiagnosis confirm override flag Cancer case

Name: LOINC Code 21992-3: Sequence numberanddiagnosis confirm override flag Cancer case
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:30.108Z

21992-3 is a LOINC code used to identify Sequence numberanddiagnosis confirm override flag Cancer case 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 Sequence number&diagnosis confirm override flag. It is commonly used with the system or sample type Cancer case.XXX.

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 Sequence number&diagnosis confirm override flag. It is commonly used with the system or sample type Cancer case.XXX.

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

What it does not mean

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

Key facts

Sequence numberanddiagnosis confirm override flag Cancer case

Sequence number&diagnosis confirm override flag

Some computer edits identify errors. Others indicate possible errors that require manual review for resolution. To eliminate the need to review the same cases repeatedly, over-ride flags have been developed to indicate that data in a record (or records) have been reviewed and, while unusual, are correct. This over-ride is used with the following edits in the NAACCR Metafile of the EDITS softwareDiagnostic Confirm, Seq Num--Central (NAACCR IF23) Diagnostic Confirm, Seq Num--Central (SEER IF23) Some edits check for code combinations that are impossible, but quite rare. If the code combination generates an error message and review of the case indicates that the codes are correct for the case, then the over-ride flag is used to skip the edit in the future. See Chapter IV, Recommended Data Edits and Software Coordination of Standards. Over-ride Flag as Used in the EDITS Software Package The edit checks if the case is one of multiple primaries and is not microscopically confirmed or has only positive lab test/marker studies (i.e., diagnostic confirmation >5) and tumor sequence number >00 (more than one primary). The edit is skipped if the sequence number is in the range of 60-99. Instructions for Coding Leave blank if the program does not generate an error message for the Diagnostic Confirmation and Sequence Number Central edit. Code 1 if the cases have been reviewed and it is verified that there are multiple primaries of special sites in which at least one diagnosis has not been microscopically confirmed... NAACCR Data Standards and Data Dictionary Version 11

Arbitrary; CA; Dx; Misc; Miscellaneous; No; Num; Oncology; Ordinal; Other; Point in time; QL; Qual; Qualitative; Random; Screen; Seq #/Dx confirm O/R; Spec; To be specified in another part of the message; TUMOR REGISTRY(NAACCR); Unspecified

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

Sequence numberanddiagnosis confirm override flag Cancer caseSeq #/Dx confirm O/R Cancer caseSequence number&diagnosis confirm override flagTUMRRGTArbPtCancer case.XXX

Frequently asked questions

Code details

Code21992-3

SystemLOINC

Display nameSequence numberanddiagnosis confirm override flag Cancer case

DescriptionSequence number&diagnosis confirm override flag

Short nameSeq #/Dx confirm O/R Cancer case

ComponentSequence number&diagnosis confirm override flag

PropertyArb

TimingPt

System (specimen)Cancer case.XXX

ScaleOrd

ClassTUMRRGT

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.38

Part names

Sequence number&diagnosis confirm override flagArbPtCancer case.XXXOrdSequence numberanddiagnosis confirm override flagArbitraryPoint in time (spot)Cancer case XXX

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.