LOINCActiveObservation

LOINC Code 44723-5: Histiocytes LM Ql (BM)

44723-5 is a LOINC code used to identify Histiocytes LM Ql (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 Histiocytes. It is commonly used with the system or sample type Bone mar.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Histiocytes. 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: Microscopy.light

What it does not mean

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

Key facts

  • Histiocytes [Presence] in Bone marrow by Light microscopy
  • Histiocytes
  • BM; BON; Bone marrow; HEMATOLOGY/CELL COUNTS; Histiocyte; Histocytes; LM; MAR; Marrow (bone); Micro; Micros; Microscopic; minimal angle of resolution; Minimum angle of resolution; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen

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

Histiocytes LM Ql (BM)Histiocytes [Presence] in Bone marrow by Light microscopyHistiocytes Mar Ql MicroHistiocytesHEM/BCHistiocytes, Bone marrowPrThr

Frequently asked questions

Code details

Code44723-5
SystemLOINC
Display nameHistiocytes LM Ql (BM)
DescriptionHistiocytes
Short nameHistiocytes Mar Ql Micro
ComponentHistiocytes
PropertyPrThr
TimingPt
System (specimen)Bone mar
ScaleOrd
MethodMicroscopy.light
ClassHEM/BC
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.56

Consumer names

Histiocytes, Bone marrow

Part names

HistiocytesPrThrPtBone marOrdMicroscopy.lightPresence or ThresholdPoint in time (spot)Bone marrowLight microscopy

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 44723-5 | HealthAssure