TheWHO Adverse Reactions Terminology (WHOART) was a dictionary meant to serve as a basis for rational coding ofadverse reaction terms. The system was maintained by theUppsala Monitoring Centre (UMC), theWorld Health Organization Collaborating Centre for International Drug Monitoring. The system is no longer actively maintained since 2015.^[1]

• 32 System-organ classesbody organ groups
• 180 High level terms for grouping Preferred terms
• 2085 Preferred terms principal terms for describing adverse reactions
• 3445 Included terms synonyms to Preferred terms

• Pharmacovigilance
• COSTART
• MedDRA
• Adverse event

• WHO Adverse Reactions Terminology

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