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

About the course

How to classify drugs and measure drug consumption - Online introductory course in the ATC/DDD methodology

The online course gives an introduction to the Anatomical Therapeutic Chemical (ATC) classification system and the technical unit of measurement, the Defined Daily Dose (DDD).

The introductory course will cover the following topics:
·        Background, overview and development of the ATC/DDD methodology
·        The main principles for establishing new ATC codes and assigning DDDs
·        ATC codes and DDDs for fixed combinations
·        Procedures for applications (ATC codes, DDDs and changes)

The course will be organized as an interactive online meeting using Microsoft Teams.  This online course is a simplified version of the two days course organized in Oslo in previous years. 

Background knowledge: The course is open for all interested parties.  However, basic knowledge in common medical terminology is recommended. The course will be held in English.

WHO Collaborating Centre for Drug Statistics Methodology
The course is arranged by the WHO Collaborating Centre for Drug Statistics Methodology, which is situated at the Norwegian Institute of Public Health in Oslo.  The Centre is responsible for the development and updating of the ATC/DDD system.  New drugs are classified and DDDs are assigned by the Centre in cooperation with the WHO International Working Group for Drug Statistics Methodology. This Working Group includes international experts in the fields of clinical pharmacology and medicine, international public health, drug regulation and drug utilisation.

Last updated: 2021-03-12