LOINCActiveObservation

LOINC Code 51331-7: CD43 cells/Cells (BM)

51331-7 is a LOINC code used to identify CD43 cells/Cells (BM) 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 Cells.CD43/Cells. It is commonly used with the system or sample type Bone mar.

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 Cells.CD43/Cells. It is commonly used with the system or sample type Bone mar.

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

  • CD43 cells/cells in Bone marrow
  • Cells.CD43/Cells
  • BM; BON; Bone marrow; CD43 Cells; Cell; CELL MARKERS; Cellularity; gpL115; Leu22; Leu-22; leukocyte sialoglycoprotein; leukosialin; MAR; Marrow (bone); minimal angle of resolution; Minimum angle of resolution; Number fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; Sialophorin

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

CD43 cells/Cells (BM)CD43 cells/cells in Bone marrowCD43 Cells NFr MarCells.CD43/CellsCELLMARKCD43 cells/cells, Bone marrowNFr

Frequently asked questions

Code details

Code51331-7
SystemLOINC
Display nameCD43 cells/Cells (BM)
DescriptionCells.CD43/Cells
Short nameCD43 Cells NFr Mar
ComponentCells.CD43/Cells
PropertyNFr
TimingPt
System (specimen)Bone mar
ScaleQn
ClassCELLMARK
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.79

Consumer names

CD43 cells/cells, Bone marrow

Part names

Cells.CD43/CellsNFrPtBone marQnNumber FractionPoint in time (spot)Bone marrow

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 51331-7 | HealthAssure