The Anatomical Therapeutic Chemical Classification System (ATC) is the coding system used for the systematic classification of drugs and is created and maintained by the Collaborating Center of the World Health Organization "WHO Collaborating Center for Drug Statistics Methodology". The Italian version is edited by DURG ‐ Italy, which is a scientific association affiliated with the European Drug Utilization Research Group (EURO DURG) and reference center for the ATC/DDD system. Since 1995 it maintains and distributes an archive of drugs commercialized in Italy with ATC and DDD (Defined Daily Dose).
ATC use according to the DPCM on EHR:
In accordance with the Technical Regulation attached to the DPCM on the EHR, the ATC codes, together with the AIC codes, have to be used within the PS for coding:
- adverse reactions to drugs and/or foods as regards the therapeutic, pharmacological or chemical class;
- pharmacological therapies of the patient;
- vaccinations of the patient.