LOINCActiveObservation

LOINC Code 35043-9: Variant lymphocytes (CSF) [#/Vol]

35043-9 is a LOINC code used to identify Variant lymphocytes (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 Lymphocytes.variant. 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 Lymphocytes.variant. 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

  • Variant lymphocytes [#/volume] in Cerebral spinal fluid
  • Lymphocytes.variant
  • CLSI (formerly NCCLS) document "Reference Leukocyte Differential Count (Proportional) and Evaluation of Instrumental Methods", 1992, recommend the use of variant lymphocytes rather than atypical or reactive lymphocytes.
  • #; ABS; absolute; absolutes; Atypical lymphocytes; Cerebral spinal fluid; Cerebrospinal Fl; Cnt; Count; Count/volume; CT; HEMATOLOGY/CELL COUNTS; Lymp; Lymph; Lympho; Lymphocyte; Lymphs; Lymphs%; Neuro; Neurology; Number concentration; Number Concentration (count/vol); Point in time; QNT; Quan; Quant; Quantitative; Random; Reactive lymphocytes; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Variant lymphocytes; Variant Lymphs

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

Variant lymphocytes (CSF) [#/Vol]Variant lymphocytes [#/volume] in Cerebral spinal fluidVariant Lymphs # CSFLymphocytes.variantHEM/BCVariant lymphocytes, Spinal fluidNCnc

Frequently asked questions

Code details

Code35043-9
SystemLOINC
Display nameVariant lymphocytes (CSF) [#/Vol]
DescriptionLymphocytes.variant
Short nameVariant Lymphs # CSF
ComponentLymphocytes.variant
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 released2.11
Last changed2.54

Consumer names

Variant lymphocytes, Spinal fluid

Part names

Lymphocytes.variantNCncPtCSFQnVariant lymphocytesNumber 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.