Anatomical Therapeutic Chemical Classification (ATC)

Ontology Info

Field	Value
Acronyme	ATC
Description	The Anatomical Therapeutic Chemical (ATC) Classification System is used for the classification of active ingredients of drugs according to the organ or system on which they act and their therapeutic, pharmacological and chemical properties. It is controlled by the World Health Organization Collaborating Centre for Drug Statistics Methodology (WHOCC), and was first published in 1976.
Format	UMLS
Categories	Health, Chemical
Groups	Unified Medical Language System

Metric	Value
Classes	6,934
Individuals	0
Properties	3
Max Depth	7
Max Child Count	37
Average Child Count	5
Classes With One Child	211
Classes With More Than 25 Children	19
Classes With No Definition	6,934