Skip Navigation Bar

Unified Medical Language System® (UMLS®)

Coding Symbols for Thesaurus of Adverse Reaction Terms (COSTART) Source Information

The Coding Symbols for a Thesaurus of Adverse Reaction Terms (COSTART) was developed by the U.S. Food and Drug Administration (FDA).

COSTART is used for coding, filing, and retrieving post-marketing adverse drug and biologic experience reports.

COSTART is organized in body system and pathophysiology hierarchies, as well as a separate fetal/neonatal category of less than 20 terms.

COSTART has been superseded by the Medical Dictionary for Regulatory Activities (MedDRA) Terminology. For more information about MedDRA in the Metathesaurus, see the MedDRA source synopsis.

Metathesaurus Update Frequency
COSTART was last updated in the Metathesaurus in 1999.