LOINCObservation

LOINC Code 31121-7: CD235a cells/100 cells (Bld)

31121-7 is a LOINC code used to identify CD235a cells/100 cells (Bld) 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.CD235a/100 cells. It is commonly used with the system or sample type Bld.

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.CD235a/100 cells. It is commonly used with the system or sample type Bld.

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: DEPRECATED
  • Order vs observation: Observation

What it does not mean

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

Key facts

  • Deprecated CD235a cells/100 cells in Blood
  • Cells.CD235a/100 cells
  • Blood; CD235a Cells; Cell; CELL MARKERS; Cellularity; Gated cells; Glycophorin A; GPA; Number fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; WB; Whole blood

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

CD235a cells/100 cells (Bld)Deprecated CD235a cells/100 cells in BloodDeprecated CD235a Cells Fr BldCells.CD235a/100 cellsCELLMARKCD235a cells per 100 cells, BloodNFr

Frequently asked questions

Code details

Code31121-7
SystemLOINC
Display nameCD235a cells/100 cells (Bld)
DescriptionCells.CD235a/100 cells
Short nameDeprecated CD235a Cells Fr Bld
ComponentCells.CD235a/100 cells
PropertyNFr
TimingPt
System (specimen)Bld
ScaleQn
ClassCELLMARK
Example units%
StatusDEPRECATED
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.07
Last changed2.70

Consumer names

CD235a cells per 100 cells, Blood

Part names

Cells.CD235a/100 cellsNFrPtBldQnNumber FractionPoint in time (spot)Blood

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 31121-7 | HealthAssure