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3.3 Reporting
The WHO Collaborating Centre is responsible for reporting all alterations to the ATCvet
classification system to users of the system. Subscriptions to ATCvet alterations can be arranged
free of charge with the WHO Collaborating Centre. ATCvet alterations are also available from
the WHO Collaborating Centres website at www.whocc.no.
All requests for new ATCvet codes, comments on existing ATCvet classifications and
suggestions for alterations should be addressed to the WHO Collaborating Centre. The reasons
for any proposed reclassification should also be given, preferably on the special application form
(see Annex 1) which can be obtained from the WHO Collaborating Centre on request or
downloaded from the WHO Collaborating Centres website.
4. ATCvet Index
The WHO Collaborating Centre for Drug Statistics Methodology publishes a new issue of the
complete ATCvet Index annually. The complete ATCvet Index consists of one list sorted
according to ATCvet codes, listing all the ATCvet codes established, and one list alphabetically
sorted according to nonproprietory drug names, including all ATCvet 5 th levels. The Index is
freely available on the website www.whocc.no or can be ordered as hard copy or as an electronic
file from the WHO Collaborating Centre. The Guidelines for ATCvet classification is also
available at the WHO Collaborating Centres website as a pdf file.
The ATCvet system has been developed in association with the ATC system for human
medicine, which is developed and maintained by the WHO Collaborating Centre for Drug
Statistics Methodology in Oslo. The ATCvet system is based on the same main principles as the
human ATC system, and the naming of levels is adapted from this system. Alterations and new
codes in the ATC system are normally implemented also in the ATCvet system.
In general the names of the levels are kept consistent with the human ATC system and all
substances included in this system are listed. In some cases the level names in the human ATC
system are not appropriate in veterinary medicine. As a consequence one change of ATCvet
level name was implemented in the 2006 edition: QD05 is now named “Drugs for
keratoseborrheic disorders (human ATC: Antipsoriatics)”.
Applications for ATCvet codes for new drugs not yet classified are received by the WHO
Collaborating Centre for Drug Statistics Methodology continuously in the course of the year.
These applications are given ATCvet codes and the classifications are discussed by the ATCvet
Working Group at the annual meeting in November. When the final decision has been taken, the
new codes are included in the ATCvet Index.
Lists of the annual ATCvet alterations are distributed in January each year free of charge to the
users of the ATCvet system according to a mailing list, together with an order form for the new
index.
5. References
1. WHO Collaborating Centre for Drug Statistics Methodology
Guidelines for ATC classification and DDD assignment 2011. Oslo 2010.
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