SNOMED_CT

SNOMED CT Concept 64566001: HLA-Aw19 antigen

64566001 is a SNOMED CT concept used to represent HLA-Aw19 antigen 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
Parents2

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

Human leucocyte antigen A19HLA - Human leucocyte antigen A19HLA - Human leukocyte antigen A19Human leukocyte antigen A19Human leucocyte antigen Aw19Human leukocyte antigen Aw19

Frequently asked questions

Code details

Code64566001
SystemSNOMED_CT
Display nameHLA-Aw19 antigen
DescriptionHuman leukocyte antigen Aw19 (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 64566001 | HLA-Aw19 antigen | HealthAssure