6C49.4ICD-11 MMS 2026-01
Hallucinogen-induced delirium
Description
Hallucinogen-induced delirium is characterised by an acute state of disturbed attention and awareness with specific features of delirium that develops during or soon after substance intoxication or during the use of hallucinogens. The amount and duration of hallucinogen use must be capable of producing delirium. The symptoms are not better explained by a primary mental disorder, by use of or withdrawal from a different substance, or by another health condition that is not classified under Mental, behavioural and neurodevelopmental disorders.
Index terms
- Hallucinogen-induced delirium
- Mental and behavioural disorders due to use of hallucinogens withdrawal state with delirium
- psychotic disorder due to hallucinogens withdrawal
Exclusions from above levels
Sibling codes
6C49.0– Episode of harmful use of hallucinogens6C49.1– Harmful pattern of use of hallucinogens6C49.2– Hallucinogen dependence6C49.3– Hallucinogen intoxication6C49.5– 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
Hallucinogen-induced delirium – http://id.who.int/icd/entity/1863378901
Allowed postcoordination axes
Part of: 6C49: Disorders due to use of hallucinogens › 06: Mental, behavioural or neurodevelopmental disorders