The Anatomical Therapeutic Chemical (ATC) classification allows for the classification of drugs. This can be used for drug utilization research.
alimentary tract and metabolism (includes insulin)
blood and blood forming organs
genitourinary system and sex hormones
hormones, systemic, excluding sex hormones and insulins
anti-infectives for systemic use
antineoplastic and immune modulating agents
antiparasitic products, insectices, repellents
A drug identifier is based on 5 levels of codes
(1) the group code (above)
(2) a 2 digit number indicting the therapeutic subgroup
(3) a 1 letter pharmacological subgroup
(4) a 1 letter chemical subgroup
(5) a 2 digit number for chemical substance
An injectable insulin of human origin may be coded A10AB01 to A10AF01.
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