6C49.1ICD-11 MMS 2026-01
Harmful pattern of use of hallucinogens
Description
A pattern of use of hallucinogens 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 hallucinogen use is evident over a period of at least 12 months if substance 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 intoxication; (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 hallucinogen intoxication on the part of the person to whom the diagnosis of Harmful pattern of use of hallucinogens applies.
Excludes
Exclusions from above levels
Child codes
Sibling codes
6C49.0– Episode of harmful use of hallucinogens6C49.2– Hallucinogen dependence6C49.3– Hallucinogen intoxication6C49.4– Hallucinogen-induced delirium6C49.5– Hallucinogen-induced psychotic disorder6C49.6– Certain specified hallucinogen-induced mental or behavioural disorders6C49.Y– Other specified disorders due to use of hallucinogens6C49.Z– Disorders due to use of hallucinogens, unspecified
Foundation entity
Harmful pattern of use of hallucinogens – http://id.who.int/icd/entity/219736364
Allowed postcoordination axes
Part of: 6C49: Disorders due to use of hallucinogens › 06: Mental, behavioural or neurodevelopmental disorders