Directory / Terminology & standards / HDB-0079

OHDSI Athena

Observational Health Data Sciences and Informatics

HDB-0079

Athena is a web application for distributing and browsing standardized vocabularies for the Observational Medical Outcomes Partnership (OMOP) Common Data Model maintained by OHDSI. It integrates over 136 vocabularies including SNOMED CT, LOINC, and RxNorm to facilitate data harmonization across observational health research networks.

Category

Terminology

Access

Open access

Region

Global

License / terms

Apache License 2.0

Data types

medical vocabulary, vocabulary mapping, OMOP concepts

OMOP vocabulary repository data harmonization observational research

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Record HDB-0079 · last verified 2026-08-05 · listed in Terminology & standards

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SNOMED CT

SNOMED International SNOMED CT is a systematized nomenclature of medicine clinical terminology system maintained by SNOMED International, a non-profit organization. It provides standardized international multilingual clinical terminology used globally to code clinical findings, procedures, diagnoses, and medical concepts in healthcare systems. Terminology Credentialed HDB-0073

LOINC

Regenstrief Institute LOINC is an international standard for identifying health observations, measurements, and laboratory tests maintained by the Regenstrief Institute at Indiana University. It enables healthcare systems to identify, exchange, and aggregate clinical data using unique standardized codes for laboratory and clinical observations. Terminology Open access HDB-0074

RxNorm

National Library of Medicine RxNorm is a normalized naming system for generic and branded clinical drugs maintained by the National Library of Medicine, part of the NIH. It provides normalized drug names and links to drug vocabularies commonly used in pharmacy management and drug interaction systems for semantic interoperation. Terminology Open access HDB-0075

WHO ICD-11

World Health Organization The International Classification of Diseases 11th Revision (ICD-11) is the global standard for diagnostic health information maintained by the World Health Organization. It provides a standardized system for classifying diseases, disorders, injuries, and health conditions used worldwide for healthcare management and clinical documentation. Terminology Open access