LOINCActiveBoth

LOINC Code 43949-7: CD2 cells (CSF) [#/Vol]

43949-7 is a LOINC code used to identify CD2 cells (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 Cells.CD2. It is commonly used with the system or sample type CSF.

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.CD2. 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: Both

What it does not mean

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

Key facts

  • CD2 cells [#/volume] in Cerebral spinal fluid
  • Cells.CD2
  • #; ABS; absolute; absolutes; CD2 Cells; CD2R; Cell; CELL MARKERS; Cellularity; Cerebral spinal fluid; Cerebrospinal Fl; Cnt; Count; Count/volume; CT; E-rosette receptor; Leu5; Leu-5; LFA-2; Lymphocyte-function antigen-2; Number concentration; Number Concentration (count/vol); Point in time; QNT; Quan; Quant; Quantitative; Random; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; T11

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

CD2 cells (CSF) [#/Vol]CD2 cells [#/volume] in Cerebral spinal fluidCD2 Cells # CSFCells.CD2CELLMARKCD2 cells, Spinal fluidNCnc

Frequently asked questions

Code details

Code43949-7
SystemLOINC
Display nameCD2 cells (CSF) [#/Vol]
DescriptionCells.CD2
Short nameCD2 Cells # CSF
ComponentCells.CD2
PropertyNCnc
TimingPt
System (specimen)CSF
ScaleQn
ClassCELLMARK
Example units/uL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.70

Consumer names

CD2 cells, Spinal fluid

Part names

Cells.CD2NCncPtCSFQnCD2 cellsNumber 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 43949-7 | HealthAssure