LOINCActiveObservation

LOINC Code 11109-6: Mast cells/Cells Manual cnt (BM)

11109-6 is a LOINC code used to identify Mast cells/Cells Manual cnt (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 Mast 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 Mast 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
  • Method: Manual count

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Mast cells/cells in Bone marrow by Manual count
  • Mast cells/Cells
  • BM; BON; Bone marrow; Cell; Cellularity; HEMATOLOGY/CELL COUNTS; Manl; MAR; Marrow (bone); Masts; minimal angle of resolution; Minimum angle of resolution; Number fraction; 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

Mast cells/Cells Manual cnt (BM)Mast cells/cells in Bone marrow by Manual countMasts NFr Mar ManualMast cells/CellsHEM/BCMast cells/cells, Bone marrowNFr

Frequently asked questions

Code details

Code11109-6
SystemLOINC
Display nameMast cells/Cells Manual cnt (BM)
DescriptionMast cells/Cells
Short nameMasts NFr Mar Manual
ComponentMast cells/Cells
PropertyNFr
TimingPt
System (specimen)Bone mar
ScaleQn
MethodManual count
ClassHEM/BC
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.79

Consumer names

Mast cells/cells, Bone marrow

Part names

Mast cells/CellsNFrPtBone marQnManual countNumber 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 11109-6 | HealthAssure