SNOMED_CT

SNOMED CT Concept 301939004: Constricted pupil

301939004 is a SNOMED CT concept used to represent Constricted pupil 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 finding in the terminology hierarchy.

Reviewed by HealthAssure Clinical TeamUpdated 26 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 finding 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: finding

What it does not mean

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

Key facts

Semantic tagFinding
Definition statusPrimitive
Definition patternSubclass
OWL axioms1
Defining attributes2
Role groups2
Module900000000000207008
Parents2
Children6

Defining attributes

Finding sitePupil structure(body structure)
InterpretsPupil constriction(observable entity)

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

MiosisSmall pupilPupil constrictionMiotic pupil

Frequently asked questions

Code details

Code301939004
SystemSNOMED_CT
Display nameConstricted pupil
DescriptionConstricted pupil (finding)

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 301939004 | Constricted pupil | HealthAssure