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.

LOINCObservation

LOINC Code 11123-7: Promyelocytes/100 WBC Microscopy (BM)

Name: LOINC Code 11123-7: Promyelocytes/100 WBC Microscopy (BM)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:21.940Z

11123-7 is a LOINC code used to identify Promyelocytes/100 WBC Microscopy (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 Promyelocytes/100 leukocytes. 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 Promyelocytes/100 leukocytes. 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: DEPRECATED
Order vs observation: Observation
Method: Microscopy

What it does not mean

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

Key facts

Deprecated Promyelocytes/100 cells in Bone marrow by Microscopy
Promyelocytes/100 leukocytes
100WBC; BM; BON; Bone marrow; HEMATOLOGY/CELL COUNTS; Leuc; Leuk; Leukocyte; Lkcs; MAR; Marrow (bone); Micro; Micros; Microscopic; minimal angle of resolution; Minimum angle of resolution; Number fraction; Percent; Point in time; Pro myelos; Progranulocyte; Progranulocytes; Promyel; Promyelocyte; QNT; Quan; Quant; Quantitative; Random; WBC; WBCs; White blood cell; White blood cells

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

Promyelocytes/100 WBC Microscopy (BM)Deprecated Promyelocytes/100 cells in Bone marrow by MicroscopyDeprecated Promyelocytes Fr Mar MicroPromyelocytes/100 leukocytesHEM/BCPromyelocytes per 100 white blood cells, Bone marrowNFr

Frequently asked questions

Code details

Code11123-7

SystemLOINC

Display namePromyelocytes/100 WBC Microscopy (BM)

DescriptionPromyelocytes/100 leukocytes

Short nameDeprecated Promyelocytes Fr Mar Micro

ComponentPromyelocytes/100 leukocytes

PropertyNFr

TimingPt

System (specimen)Bone mar

ScaleQn

MethodMicroscopy

ClassHEM/BC

Example units%

StatusDEPRECATED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.70

Consumer names

Promyelocytes per 100 white blood cells, Bone marrow

Part names

Promyelocytes/100 leukocytesNFrPtBone marQnMicroscopyNumber 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.