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

Visiting/delivery address:
Sandakerveien 24C
Bygg C
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
J02ACTriazole derivativesTriazole and tetrazole derivativesFinal2022
J06BC Other immunoglobulins Antibacterial monoclonal antibodies 01.09.20212022
P01AB51metronidazole, combinationsmetronidazole and furazolidoneFinal2022
P01BB51proguanil, combinationsproguanil and atovaquoneFinal2022
R05CA05altheae rootaltheae radix01.09.20212022

Last updated: 2021-05-04