World Health Organization · 2026-01 · English
6C4G Disorders due to use of unknown or unspecified psychoactive substances
Official WHO ICD-11 MMS tabulation. This international classification is separate from US ICD-10-CM. For complete instructions and postcoordination, consult the WHO browser.
More specific codes
6C4G.0Episode of harmful use of unknown or unspecified psychoactive substances6C4G.1Harmful pattern of use of unknown or unspecified psychoactive substance6C4G.2Unknown or unspecified psychoactive substance dependence6C4G.3Intoxication due to unknown or unspecified psychoactive substance6C4G.4Withdrawal due to unknown or unspecified psychoactive substance6C4G.5Delirium induced by unknown or unspecified psychoactive substance6C4G.6Psychotic disorder induced by unknown or unspecified psychoactive substance6C4G.7Certain unknown or unspecified psychoactive substance-induced mental or behavioural disorders6C4G.YOther specified disorders due to use of unknown or unspecified psychoactive substances6C4G.ZDisorders due to use of unknown or unspecified psychoactive substances, unspecified© World Health Organization · CC BY-ND 3.0 IGO