RxNorm Drug Terminology Database with RESTful APIs

RxNav-in-a-Box is a locally-installable software package providing access to standardized drug terminologies and APIs from the U.S. Department of Health & Human Services. It includes RxNorm, RxTerms, RxClass, RxCUI history, and drug-drug interaction data. The package was last updated in July 2025.

Use Cases

• Map clinical drug names to standardized RxNorm codes for electronic health record interoperability.
• Leverage RxCUI history data to track concept changes and maintain longitudinal data integrity.
• Utilize the drug-drug interaction API to flag potential adverse medication combinations in clinical decision support systems.
• Employ RxClass hierarchies for drug categorization and pharmacologic class-based analysis.

Strengths

• Maintained by the U.S. Department of Health & Human Services, an authoritative source for health data standards.
• Includes multiple linked drug terminology systems (RxNorm, RxTerms, RxClass) for comprehensive coverage.
• Provides a RESTful API for programmatic access to drug data and interactions.
• Updated as recently as July 2025, indicating active maintenance.

Limitations

• The dataset size, row count, and specific data volume are not documented in the provided input.
• Primary file format is HTML, which may not be optimal for direct analytical use without API access or parsing.
• Lacks sample data or a defined schema, making initial assessment of content structure difficult.

Provenance

Source

U.S. Department of Health & Human Services, National Library of Medicine (RxNav).

Collection Method

Packaged distribution of the RxNav application and its underlying terminology databases.

Freshness

Last updated 2025-07-17.