What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 81423-6: Microscopic observation Acetate esterase stain Nom (BM)

Name: LOINC Code 81423-6: Microscopic observation Acetate esterase stain Nom (BM)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:05.775Z

81423-6 is a LOINC code used to identify Microscopic observation Acetate esterase stain Nom (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 Observation. 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 Observation. 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: Both
Method: Acetate esterase stain

What it does not mean

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

Key facts

Microscopic observation [Identifier] in Bone marrow by Acetate esterase stain
Observation
AE Stn; ANA; BM; BON; Bone marrow; Identity or presence; MAR; Marrow (bone); minimal angle of resolution; Minimum angle of resolution; Nominal; Non-specific esterase stain; NSE; Pathology; Point in time; Random; St; Stains; Stn

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

Microscopic observation Acetate esterase stain Nom (BM)Microscopic observation [Identifier] in Bone marrow by Acetate esterase stainAE Stn MarObservationPATHMicroscopic observation, Bone marrowPrid

Frequently asked questions

Code details

Code81423-6

SystemLOINC

Display nameMicroscopic observation Acetate esterase stain Nom (BM)

DescriptionObservation

Short nameAE Stn Mar

ComponentObservation

PropertyPrid

TimingPt

System (specimen)Bone mar

ScaleNom

MethodAcetate esterase stain

ClassPATH

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.56

Last changed2.78

Consumer names

Microscopic observation, Bone marrow

Part names

ObservationPridPtBone marNomAcetate esterase stainPresence or IdentityPoint 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.