LOINCActiveObservation

LOINC Code 26454-9: RBC (CSF) [#/Vol]

26454-9 is a LOINC code used to identify RBC (CSF) [#/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 CSF.

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 CSF.

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

  • Erythrocytes [#/volume] in Cerebral spinal fluid
  • Erythrocytes
  • #; ABS; absolute; absolutes; Cerebral spinal fluid; Cerebrospinal Fl; Cnt; Count; Count/volume; CT; Discocytes; Erthrocyte; Erythrocyte; HEMATOLOGY/CELL COUNTS; Number concentration; Number Concentration (count/vol); 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; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid

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 (CSF) [#/Vol]Erythrocytes [#/volume] in Cerebral spinal fluidRBC # CSFErythrocytesHEM/BCRed Blood Cell (RBC) Count, Spinal fluidNCnc

Frequently asked questions

Code details

Code26454-9
SystemLOINC
Display nameRBC (CSF) [#/Vol]
DescriptionErythrocytes
Short nameRBC # CSF
ComponentErythrocytes
PropertyNCnc
TimingPt
System (specimen)CSF
ScaleQn
ClassHEM/BC
Example units10*3/uL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.73

Consumer names

Red Blood Cell (RBC) Count, Spinal fluid

Part names

ErythrocytesNCncPtCSFQnNumber ConcentrationPoint in time (spot)Cerebral spinal fluid

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 26454-9 | HealthAssure