LOINCActiveObservation

LOINC Code 51266-5: CD23 cells/Cells (Tiss)

51266-5 is a LOINC code used to identify CD23 cells/Cells (Tiss) 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 Cells.CD23/Cells. It is commonly used with the system or sample type Tiss.

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 Cells.CD23/Cells. It is commonly used with the system or sample type Tiss.

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

  • CD23 cells/cells in Tissue
  • Cells.CD23/Cells
  • B6; B-6; BLAST-2; CD23 Cells; Cell; CELL MARKERS; Cellularity; FceRII; Leu20; Leu-20; Low affinity IgE receptor; Number fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; Tissue; Tissue, 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

CD23 cells/Cells (Tiss)CD23 cells/cells in TissueCD23 Cells NFr TissCells.CD23/CellsCELLMARKCD23 cells/cells, TissueNFr

Frequently asked questions

Code details

Code51266-5
SystemLOINC
Display nameCD23 cells/Cells (Tiss)
DescriptionCells.CD23/Cells
Short nameCD23 Cells NFr Tiss
ComponentCells.CD23/Cells
PropertyNFr
TimingPt
System (specimen)Tiss
ScaleQn
ClassCELLMARK
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.79

Consumer names

CD23 cells/cells, Tissue

Part names

Cells.CD23/CellsNFrPtTissQnNumber FractionPoint in time (spot)Tissue and Smears

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 51266-5 | HealthAssure