LOINCActiveObservation

LOINC Code 42799-7: Quadrant Breast

42799-7 is a LOINC code used to identify Quadrant Breast 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 Quadrant. It is commonly used with the system or sample type Breast.

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 Quadrant. It is commonly used with the system or sample type Breast.

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

  • Quadrant Breast
  • Quadrant
  • Arbitrary; Brst; Nominal; Oncology; Point in time; Random; TUMOR REGISTRY(NAACCR)

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

Quadrant BreastQuadrant BrstQuadrantTUMRRGTArbPtBreast

Frequently asked questions

Code details

Code42799-7
SystemLOINC
Display nameQuadrant Breast
DescriptionQuadrant
Short nameQuadrant Brst
ComponentQuadrant
PropertyArb
TimingPt
System (specimen)Breast
ScaleNom
ClassTUMRRGT
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.16
Last changed2.27

Part names

QuadrantArbPtBreastNomArbitraryPoint 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 42799-7 | HealthAssure