LOINCActiveBoth

LOINC Code 57764-3: Microscopic exam Cytology (BM) [Interp]

57764-3 is a LOINC code used to identify Microscopic exam Cytology (BM) [Interp] 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 Microscopic exam. 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 Microscopic exam. 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: Cytology

What it does not mean

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

Key facts

  • Microscopic exam [Interpretation] of Bone marrow by Cytology
  • Microscopic exam
  • BM; BON; Bone marrow; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; MAR; Marrow (bone); Micro; minimal angle of resolution; Minimum angle of resolution; Nominal; Point in time; 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

Microscopic exam Cytology (BM) [Interp]Microscopic exam [Interpretation] of Bone marrow by CytologyMicroscopic Mar-ImpMicroscopic examCYTOMicroscopic exam, Bone marrowImp

Frequently asked questions

Code details

Code57764-3
SystemLOINC
Display nameMicroscopic exam Cytology (BM) [Interp]
DescriptionMicroscopic exam
Short nameMicroscopic Mar-Imp
ComponentMicroscopic exam
PropertyImp
TimingPt
System (specimen)Bone mar
ScaleNom
MethodCytology
ClassCYTO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.29

Consumer names

Microscopic exam, Bone marrow

Part names

Microscopic examImpPtBone marNomCytologyImpression/interpretation of studyPoint 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 57764-3 | HealthAssure