LOINCActiveObservation

LOINC Code 51229-3: CD11b cells/Cells (BM)

51229-3 is a LOINC code used to identify CD11b 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.CD11b/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.CD11b/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

  • CD11b cells/cells in Bone marrow
  • Cells.CD11b/Cells
  • AlphaM integrin chain; AlphaM-beta2; BM; BON; Bone marrow; C3biR; CD11b Cells; Cell; CELL MARKERS; Cellularity; CR3; Leu15; Leu-15; Mac-1; MAR; Marrow (bone); minimal angle of resolution; Minimum angle of resolution; Mo1; Number fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; R3; 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

CD11b cells/Cells (BM)CD11b cells/cells in Bone marrowCD11b Cells NFr MarCells.CD11b/CellsCELLMARKCD11b cells/cells, Bone marrowNFr

Frequently asked questions

Code details

Code51229-3
SystemLOINC
Display nameCD11b cells/Cells (BM)
DescriptionCells.CD11b/Cells
Short nameCD11b Cells NFr Mar
ComponentCells.CD11b/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

CD11b cells/cells, Bone marrow

Part names

Cells.CD11b/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.