LOINCActiveObservation

LOINC Code 23859-2: RBC LM (Specimen) [#/Vol]

23859-2 is a LOINC code used to identify RBC LM (Specimen) [#/Vol] 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 Erythrocytes. It is commonly used with the system or sample type XXX.

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 Erythrocytes. It is commonly used with the system or sample type XXX.

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

  • Erythrocytes [#/volume] in Specimen by Light microscopy
  • Erythrocytes
  • #; ABS; absolute; absolutes; Cnt; Count; Count/volume; CT; Discocytes; Erthrocyte; Erythrocyte; HEMATOLOGY/CELL COUNTS; LM; Micro; Micros; Microscopic; Misc; Miscellaneous; Number concentration; Number Concentration (count/vol); Other; Point in time; QNT; Quan; Quant; Quantitative; Random; RBC; RBCS; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells; Spec; To be specified in another part of the message; Unspecified

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

RBC LM (Specimen) [#/Vol]Erythrocytes [#/volume] in Specimen by Light microscopyRBC # Spec MicroErythrocytesHEM/BCRed Blood Cell (RBC) Count, SpecimenNCnc

Frequently asked questions

Code details

Code23859-2
SystemLOINC
Display nameRBC LM (Specimen) [#/Vol]
DescriptionErythrocytes
Short nameRBC # Spec Micro
ComponentErythrocytes
PropertyNCnc
TimingPt
System (specimen)XXX
ScaleQn
MethodMicroscopy.light
ClassHEM/BC
Example units10*3/uL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0n
Last changed2.69

Consumer names

Red Blood Cell (RBC) Count, Specimen

Part names

ErythrocytesNCncPtXXXQnMicroscopy.lightNumber ConcentrationPoint in time (spot)Light 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 23859-2 | HealthAssure