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 level name alterations

List of latest ATC/DDD decisions from the WHO International Working Group for Drug Statistics Methodology. Comments or objections to the decisions should be forwarded to the WHO Collaborating Centre for Drug Statistics Methodology within the deadline (see list). If no objections are received, the new ATC/DDD decisions will be considered final and included in the ATC/DDD Index. In the list final indicates that the date for objection has expired. The year of implementation in the ATC/DDD Index is given in the list.

Please note that the ATC and DDD alterations are only valid and implemented in the coming annual updates of January 1st.

ATC codePrevious ATC level nameNew ATC level nameDeadline for objection to temporary codesImplementation in ATC/DDD index
J04AM08isoniazid, sulfamethoxazole, trimethoprim and pyridoxineisoniazid, sulfamethoxazole and trimethoprimFinal2025
D01AA20combinationsantibiotics in combination with corticosteroidsFinal2025
A12BA51potassium chloride, combinationspotassium, combinationsFinal2025
L02BX53abiraterone and prednisoloneabiraterone and corticosteroids 01.09.20242025

Last updated: 2024-05-07