LOINCActiveObservation

LOINC Code 51581-7: Other cells/Cells (BM)

51581-7 is a LOINC code used to identify Other 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 Other cells/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 Other cells/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

  • Other cells/cells in Bone marrow
  • Other cells/Cells
  • BM; BON; Bone marrow; Cell; Cellularity; HEMATOLOGY/CELL COUNTS; MAR; Marrow (bone); minimal angle of resolution; Minimum angle of resolution; Number fraction; Othr; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Other cells/Cells (BM)Other cells/cells in Bone marrowOther cells NFr MarOther cells/CellsHEM/BCOther cells/cells, Bone marrowNFr

Frequently asked questions

Code details

Code51581-7
SystemLOINC
Display nameOther cells/Cells (BM)
DescriptionOther cells/Cells
Short nameOther cells NFr Mar
ComponentOther cells/Cells
PropertyNFr
TimingPt
System (specimen)Bone mar
ScaleQn
ClassHEM/BC
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.24
Last changed2.79

Consumer names

Other cells/cells, Bone marrow

Part names

Other cells/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 51581-7 | HealthAssure