6C4F.1ICD-11 MMS 2026-01
Harmful pattern of use of multiple specified psychoactive substances
Description
A pattern of use of multiple specified psychoactive substances or medications that are not included in the other substance classes specifically identified under Disorders Due to Substance Use that has caused damage to a person’s physical or mental health or has resulted in behaviour leading to harm to the health of others. The pattern of substance use is evident over a period of at least 12 months if use is episodic or at least one month if use is continuous (i.e., daily or almost daily). Harm to health of the individual occurs due to one or more of the following: (1) behaviour related to multiple substance intoxication or psychoactive medication use; (2) direct or secondary toxic effects on body organs and systems; or (3) a harmful route of administration. Harm to health of others includes any form of physical harm, including trauma, or mental disorder that is directly attributable to behaviour related to multiple substance intoxication or psychoactive medication use on the part of the person to whom the diagnosis of Harmful pattern of use of multiple specified psychoactive substances applies.
Excludes
Exclusions from above levels
Child codes
Sibling codes
6C4F.0– Episode of harmful use of multiple specified psychoactive substances6C4F.2– Multiple specified psychoactive substances dependence6C4F.3– Intoxication due to multiple specified psychoactive substances6C4F.4– Multiple specified psychoactive substances withdrawal6C4F.5– Delirium induced by multiple specified psychoactive substances including medications6C4F.6– Psychotic disorder induced by multiple specified psychoactive substances6C4F.7– Certain multiple specified psychoactive substances-induced mental or behavioural disorders6C4F.Y– Other specified disorders due to use of multiple specified psychoactive substances, including medications6C4F.Z– Disorders due to use of multiple specified psychoactive substances, including medications, unspecified
Foundation entity
Harmful pattern of use of multiple specified psychoactive substances – http://id.who.int/icd/entity/1719901309
Allowed postcoordination axes
Part of: 6C4F: Disorders due to use of multiple specified psychoactive substances, including medications › 06: Mental, behavioural or neurodevelopmental disorders