LOINC Code 21999-8: Leukemia and lymphoma override flag Cancer case
21999-8 is a LOINC code used to identify Leukemia and lymphoma 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 Leukemia & lymphoma override flag. It is commonly used with the system or sample type Cancer case.XXX.
LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Leukemia & lymphoma 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
Leukemia and lymphoma override flag Cancer case
Leukemia & lymphoma 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 Confirmation, Histol Typ (COC) Diagnostic Confirmation, Histologic Typ (SEER IF48) Diagnostic Confirmation, Histol Typ ICDO3 (COC) Diagnostic Confirmation, Histology ICDO3 (SEER IF48) Some edits check for code combinations that are possible, 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 Edits of the type Diagnostic Confirmation, Histol Typ differ in use of ICD-O-2 or ICD-O-3 and check the following: Since lymphoma and leukemia are almost exclusively microscopic diagnoses, this edit forces review of any cases of lymphoma that have diagnostic confirmation of direct visualization or clinical, and any leukemia with a diagnostic confirmation of direct visualization. If histology = 9590-9717 for ICD-O-2 or 9590-9729 for ICD-O-3 (lymphoma) then Diagnostic Confirmation cannot be 6 (direct visualization) or 8 (clinical). If histology = 9720-9941 for ICD-O-2 or 9731-9948 for ICD-O-3 (leukemia and other) then Diagnostic Confirmation cannot be 6 (direct visualization). Instructions for Coding Leave blank if the program does not generate an error message for the edits of the type Diagnostic Confirmation, Histol Typ. Leave blank and correct any errors for the case if an item is discovered to be incorrect. If the edit produces an error or warning message, verify that the Histologic Type and Diagnostic Confirmation are correctly coded. Remember that positive hematologic findings and bone marrow specimens are included as histologic confirmation (code 1 in Diagnostic Confirmation) for leukemia. Code 1 indicates that a review has taken place and histologic type and diagnostic confirmation are correctly coded... NAACCR Data Standards and Data Dictionary Version 11
Arbitrary; CA; Leukemia/Lymphoma O/R; Misc; Miscellaneous; Oncology; Ordinal; Other; Point in time; QL; Qual; Qualitative; Random; Screen; 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
Leukemia and lymphoma override flag Cancer caseLeukemia/Lymphoma O/R Cancer caseLeukemia & lymphoma override flagTUMRRGTArbPtCancer case.XXX
Frequently asked questions
Code details
Code21999-8
SystemLOINC
Display nameLeukemia and lymphoma override flag Cancer case
DescriptionLeukemia & lymphoma override flag
Short nameLeukemia/Lymphoma O/R Cancer case
ComponentLeukemia & lymphoma 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
Leukemia & lymphoma override flagArbPtCancer case.XXXOrdLeukemia and lymphoma 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.
