Postal address:
Norwegian Institute of Public Health
WHO Collaborating Centre for Drug Statistics Methodology
Postboks 222 Sk°yen
0213 Oslo

Visiting/delivery address:
Myrens verksted 6H
0473 Oslo

Tel:  +47 21 07 81 60

ATC Index with DDDs

ATC indexThe WHO Collaborating Centre for Drug Statistics Methodology publishes an updated version of the complete ATC index with DDDs annually.  The ATC index is available in paper copy and includes one list sorted according to ATC codes, with all the established ATC codes and DDDs for plain substances, and one list alphabetically sorted according to nonproprietary drug names, including all ATC 5th levels. The ATC index is also available in electronic format (Excel or XML). Order form.

Access to a searchable version of the ATC Index with DDDs (including text from the Guidelines) is available free of charge on this website (ATC/DDD Index 2024).

Lists of the annual ATC/DDD alterations are distributed in November/December each year free of charge to the users of the ATC/DDD system according to a mailing list. Please contact the Centre if you want to receive this information ().

Suggested citation: WHO Collaborating Centre for Drug Statistics Methodology, ATC classification index with DDDs, 2024. Oslo, Norway 2024.

Cumulative lists of ATC/DDD alterations

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Last updated: 2024-01-26