SNOMED_CT

SNOMED CT Concept 24655002: Lymphocyte antigen CD4

24655002 is a SNOMED CT concept used to represent Lymphocyte antigen CD4 in structured clinical data. You may see this concept in clinical documentation systems, problem lists, terminology services, interoperability records, or semantic mapping workflows. SNOMED CT is a clinical terminology used to capture healthcare meaning in a standardized, interoperable form. This concept is typed as a substance in the terminology hierarchy.

Reviewed by HealthAssure Clinical TeamUpdated 25 May 2026

What is this code?

SNOMED CT is a clinical terminology used to capture healthcare meaning in a standardized, interoperable form. This concept is typed as a substance in the terminology hierarchy.

When is it used?

  • Used to represent a standardized clinical concept in health records, terminology services, and semantic mappings.
  • Often linked to diagnoses, findings, procedures, body structures, organisms, substances, or observable entities depending on the concept type.
  • Semantic tag: substance

What it does not mean

  • A terminology concept label alone does not replace clinical interpretation, diagnosis context, or treatment advice.

Key facts

Semantic tagSubstance
Definition statusPrimitive
Definition patternSubclass
OWL axioms1
Module900000000000207008
Parents1

Where you may see this code

You may see this concept in clinical documentation systems, problem lists, terminology services, interoperability records, or semantic mapping workflows.

Common synonyms

Leucocyte 3aLeukocyte 3aT-cell lineage 4T4 - T-cell lineage 4Ortho Kung T4OKT4 - Ortho Kung T4Cluster of differentiation antigen 4CD4 - Cluster of differentiation antigen 4T-helper cell marker

Frequently asked questions

Code details

Code24655002
SystemSNOMED_CT
Display nameLymphocyte antigen CD4
DescriptionLymphocyte antigen CD4 (substance)

Flags

BillableNo
Valid clinical useNo

Source

SourceSNOMED CT
Version20260501T120000Z
Releasesnapshot

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from SNOMED CT. 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.

SNOMED CT 24655002 | Lymphocyte antigen CD4 | HealthAssure