The Data Developers
Identity & Registry

UMLS Medical Language Intelligence

Unified Medical Language System with cross-terminology mappings across SNOMED, MeSH, ICD, LOINC, RxNorm, and 60+ biomedical vocabularies.

3M+ concepts Annual Updated 2026-07-01

Overview

Unified Medical Language System with cross-terminology mappings across SNOMED, MeSH, ICD, LOINC, RxNorm, and 60+ biomedical vocabularies.

Use authoritative registries as the stable join layer across drugs, genes, organizations, providers, and chemicals.

Resolve synonyms, deprecated codes, alternate names, and source-specific identifiers into canonical entities.

Improve match rates for every downstream product by applying deterministic and reviewed mapping rules.

Maintain identity lineage, version history, and confidence scores for audit-ready joins.

Source authority

National Library of Medicine — UMLS

Freshness

Last refreshed 2026-07-01

Annual

Coverage

3M+ concepts

2 delivery tables