It's a Classification of Diseases

scientific classification. taxonomy is the system of naming and classification in science, and nosology is the classification and naming system for medical and psychological phenomena.

Nosology

I am not sure exactly sure what branch of medicine deals with alcoholism, addicition, chemical dependancy? Some one should know for sure.

Poul Krogh-Jensen has written:

'Praksis sygdoms klassifikation med terminologi' -- subject(s): Nosology, Terminology