LOINC

LOINC Code 5431-2: CD122 Qn (WBC)

5431-2 is a LOINC code used to identify CD122 Qn (WBC) 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 CD122. It is commonly used with the system or sample type WBC.

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 CD122. It is commonly used with the system or sample type WBC.

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

What it does not mean

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

Key facts

  • Deprecated CD122 cells/100 cells in Blood
  • CD122
  • Arbitrary concentration; CELL MARKERS; IL-2Rbeta; Interleukin 2 receptor beta chain; Leukocytes; Point in time; QNT; Quan; Quant; Quantitative; Random; WBCs; White blood cells

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

CD122 Qn (WBC)Deprecated CD122 cells/100 cells in BloodDeprecated CD122 WBC-aCncCD122CELLMARKCD122, White blood cellsACnc

Frequently asked questions

Code details

Code5431-2
SystemLOINC
Display nameCD122 Qn (WBC)
DescriptionCD122
Short nameDeprecated CD122 WBC-aCnc
ComponentCD122
PropertyACnc
TimingPt
System (specimen)WBC
ScaleQn
ClassCELLMARK
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.69

Consumer names

CD122, White blood cells

Part names

CD122ACncPtWBCQnArbitrary ConcentrationPoint in time (spot)White blood cells

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 5431-2 | HealthAssure