LOINCActiveObservation

LOINC Code 74231-2: Erythropoiesis assessment Nar (BM)

74231-2 is a LOINC code used to identify Erythropoiesis assessment Nar (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 Erythropoiesis assessment. 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 Erythropoiesis assessment. 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

  • Erythropoiesis assessment in Bone marrow Narrative
  • Erythropoiesis assessment
  • Narrative text findings of erythropoiesis (red blood cell production) in the bone marrow. Text may state if red blood cells are increased or decreased as as well as other descriptive findings (e.g. related to maturation, megaloblastoid changes, etc.).
  • BM; BON; Bone marrow; Finding; Findings; HEMATOLOGY/CELL COUNTS; MAR; Marrow (bone); minimal angle of resolution; Minimum angle of resolution; Narrative; Point in time; Random; Report

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

Erythropoiesis assessment Nar (BM)Erythropoiesis assessment in Bone marrow NarrativeErythropoiesis MarErythropoiesis assessmentHEM/BCErythropoiesis assessment, Bone marrowFind

Frequently asked questions

Code details

Code74231-2
SystemLOINC
Display nameErythropoiesis assessment Nar (BM)
DescriptionErythropoiesis assessment
Short nameErythropoiesis Mar
ComponentErythropoiesis assessment
PropertyFind
TimingPt
System (specimen)Bone mar
ScaleNar
ClassHEM/BC
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.46
Last changed2.46

Consumer names

Erythropoiesis assessment, Bone marrow

Part names

Erythropoiesis assessmentFindPtBone marNarFindingPoint 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 74231-2 | HealthAssure