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Anatomical Therapeutic Chemical Classification
Last uploaded:
March 22, 2026
| Acronym | ATC |
| Visibility | Public |
| 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. |
| Status | Production |
| Format | UMLS |
| Categories | |
| Groups |
| Alternative name |
ATC
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| Bibliographic reference |
http://en.wikipedia.org/wiki/Anatomical_Therapeutic_Chemical_Classification_System
http://en.wikipedia.org/wiki/Anatomical_Therapeutic_Chemical_Classification_System
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| Contact | Who Collaborating Centre For Drug Statistics Methodology ([email protected]) |
| Creation date | November 3, 2025
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| Deprecated |
false
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| Documentation |
https://www.whocc.no/atc/structure_and_principles/
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| Homepage |
http://www.who.int/classifications/atcddd/en/
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| Imports |
http://www.w3.org/2004/02/skos/core
http://www.w3.org/2004/02/skos/core
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| Notes |
RDF version of the UMLS ontology ATC (source version 2025_02_10), derived from UMLS release 2025AA; converted with the UMLS2RDF tool (https://github.com/ncbo/umls2rdf), developed by the NCBO project.
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RDF Version of the UMLS ontology ATC; converted with the UMLS2RDF tool (https://github.com/ncbo/umls2rdf), developed by the NCBO project.
See more...
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| Object creation date property |
http://purl.org/dc/elements/1.1/created
http://purl.org/dc/elements/1.1/created
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| Object modification date property |
http://purl.org/dc/elements/1.1/modified
http://purl.org/dc/elements/1.1/modified
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| Source |
UMLS 2025AB
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UMLS 2025AA
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| Submission date | March 22, 2026
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| Syntax |
http://www.w3.org/ns/formats/Turtle
http://www.w3.org/ns/formats/Turtle
|
| Version information |
2025_02_10
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| uri |
http://purl.bioontology.org/ontology/ATC/
http://purl.bioontology.org/ontology/ATC/
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| Version | Released | Uploaded | Downloads |
|---|---|---|---|
| 2025_02_10 (Parsed, Indexed, Metrics, Annotator) | 11/03/2025 | 03/22/2026 | RDF/TTL | CSV | Diff |
| 2025_02_10 (Archived) | 05/06/2025 | 03/19/2026 | RDF/TTL | Diff |
| ATC_2024_01_19_24_09_03 (Archived) | 11/04/2024 | 01/16/2025 | RDF/TTL | Diff |
| 2024AA (Archived) | 05/06/2024 | 08/28/2024 | RDF/TTL | Diff |
| 2023AB (Archived) | 11/06/2023 | 01/31/2024 | RDF/TTL | Diff |
| 2023AA (Archived) | 04/01/2023 | 08/07/2023 | RDF/TTL | Diff |
| 2022AB (Archived) | 11/07/2022 | 01/06/2023 | RDF/TTL | Diff |
| 2022AA (Archived) | 05/02/2022 | 08/09/2022 | RDF/TTL | Diff |
| 2022AA (Archived) | 05/02/2022 | 06/10/2022 | RDF/TTL | Diff |
| 2021AB (Archived) | 11/01/2021 | 11/18/2021 | RDF/TTL | Diff |
| 2021AA (Archived) | 04/03/2021 | 05/20/2021 | RDF/TTL | Diff |
| 2020AB (Archived) | 11/02/2020 | 01/06/2021 | RDF/TTL | Diff |
| 2020AA (Archived) | 05/04/2018 | 09/24/2020 | RDF/TTL | Diff |
| 2019AB (Archived) | 11/04/2019 | 11/18/2019 | RDF/TTL | Diff |
| 2019AA (Archived) | 05/06/2019 | 08/27/2019 | RDF/TTL | Diff |
| 2018AB (Archived) | 11/05/2018 | 04/29/2019 | RDF/TTL | Diff |
| 2018AA (Archived) | 05/07/2018 | 07/06/2018 | RDF/TTL | Diff |
| 2017AB (Archived) | 11/06/2017 | 07/06/2018 | RDF/TTL | Diff |
| 2017AA (Archived) | 05/08/2017 | 04/06/2018 | RDF/TTL | Diff |
| 2016AB (Archived) | 02/06/2017 | 02/06/2017 | RDF/TTL | Diff |
| 2016AA (Archived) | 09/06/2016 | 09/06/2016 | RDF/TTL | Diff |
| 2015AB (Archived) | 07/20/2016 | 07/20/2016 | RDF/TTL | Diff |
| 2015AA (Archived) | 06/09/2015 | 06/09/2015 | RDF/TTL | Diff |
| 1 (Archived) | 07/12/2011 | 03/26/2015 | RDF/TTL |
| 1 (Archived) | 07/12/2011 | 03/26/2012 | OWL |
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No views of ATC available
| Classes | 7,024 |
| Individuals | 0 |
| Properties | 3 |
| Maximum depth | 7 |
| Maximum number of children | 41 |
| Average number of children | 5 |
| Classes with a single child | 209 |
| Classes with more than 25 children | 22 |
| Classes with no definition | 7,024 |