The Anatomical Therapeutic Chemical (ATC) classification system, divides active substances into different groups according to the organ or system on which they act and their therapeutic, pharmacological and chemical properties. Drugs are classified in groups at five different levels; Drugs are divided into fourteen main groups (1st level), with pharmacological/therapeutic subgroups (2nd level). The 3rd and 4th levels are chemical/pharmacological/therapeutic subgroups and the 5th level is the chemical substance. The Anatomical Therapeutic Chemical (ATC) classification system and the Defined Daily Dose (DDD) is a tool for exchanging and comparing data on drug use at international, national or local levels.

Prefix

atc

Alternative Prefixes

ATTC ATC_code

Keywords

anatomical therapeutic chemical code approved drug biomedical science chemical chemical biology drug ontology pharmacological family classification pharmacology

Links

Homepage

Contact

WHO Collaborating Centre for Drug Statistics Methodology

Pattern for Local Unique Identifiers

Local identifiers in Anatomical Therapeutic Chemical Classification System should match this regular expression:
^[A-Z](\d+([A-Z]{1,2}(\d+)?)?)?$

Example Local Unique Identifier

A10BA02   Resolve

Pattern for CURIES

Compact URIs (CURIEs) constructed from Anatomical Therapeutic Chemical Classification System should match this regular expression:
^atc:[A-Z](\d+([A-Z]{1,2}(\d+)?)?)?$

Example CURIE

atc:A10BA02

Publications

• 1980 [New classification of drugs. The Medical list and the Drug catalogue are introduced in Anatomical--Therapeutic--Chemical classification code (ACT-code) in 1981]
• 2000 Different versions of the anatomical therapeutic chemical classification system and the defined daily dose--are drug utilisation data comparable?

The metaregistry provides mappings between the Bioregistry and other registries. There are 12 mappings to external registries for this resource with 6 unique external prefixes.

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier A10BA02 is used to demonstrate the providers available for Anatomical Therapeutic Chemical Classification System. A guide for curating additional providers can be found here.

Additional providers curated in the Bioregistry are listed here. These are typically inherited from Identifiers.org or Prefix Commons, and need extra curation.