HealthAssure
HealthAssureGood Life
LOINCActiveObservation

LOINC Code 84904-2: Gleason score at positive margin Ql (Prostate tumor)

84904-2 is a LOINC code used to identify Gleason score at positive margin Ql (Prostate tumor) 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 Gleason score at positive margin. It is commonly used with the system or sample type Prostate tumor.

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 Gleason score at positive margin. It is commonly used with the system or sample type Prostate tumor.

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

Gleason score at positive margin in Prostate tumor Qualitative
Gleason score at positive margin
The Gleason score of the tumor at the positive surgical margin (PSM) is a recommended element of the International Collaboration on Cancer Reporting (ICCR) dataset.(http//www.iccr-cancer.org/datasets) If there are multiple PSMs with differently scored cancers present, the highest score is recorded. The Gleason score at the PSM is a known independent predictor of biochemical recurrence and may be used in the selection of patients for adjuvant therapy.[PMID: 21992536] This term was created for, but not limited in use to, the cancer structured reporting protocols developed by the Royal College of Pathologists of Australasia (RCPA) for structured reporting of various cancers.
Cancer; Gleason score at pos margin; GS; Ordinal; PATHOLOGY; Point in time; Pos; Prost; Prostatic; PrT; Ql; Qual; Qualitative; Random; Scale; Scre; Screen; tumors; tumour; tumours

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

Gleason score at positive margin Ql (Prostate tumor)Gleason score at positive margin in Prostate tumor QualitativeGleason score at pos margin PrT QlGleason score at positive marginPATHGleason score at positive margin, Prostate TumorScore

Frequently asked questions

Code details

Code84904-2
SystemLOINC
Display nameGleason score at positive margin Ql (Prostate tumor)
DescriptionGleason score at positive margin
Short nameGleason score at pos margin PrT Ql
ComponentGleason score at positive margin
PropertyScore
TimingPt
System (specimen)Prostate tumor
ScaleOrd
ClassPATH
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.58
Last changed2.71

Consumer names

Gleason score at positive margin, Prostate Tumor

Part names

Gleason score at positive marginScorePtProstate tumorOrdPoint 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.