6C49.3ICD-11 MMS 2026-01
Hallucinogen intoxication
Description
Hallucinogen intoxication is a clinically significant transient condition that develops during or shortly after the consumption of hallucinogens that is characterised by disturbances in consciousness, cognition, perception, affect, behaviour, or coordination. These disturbances are caused by the known pharmacological effects of hallucinogens and their intensity is closely related to the amount of hallucinogen consumed. They are time-limited and abate as the hallucinogen is cleared from the body. Presenting features may include hallucinations, illusions, perceptual changes such as depersonalisation, derealization, or synesthesias (blending of senses, such as a visual stimulus evoking a smell), anxiety, depressed or dysphoric mood, ideas of reference, paranoid ideation, impaired judgment, palpitations, sweating, blurred vision, tremors and incoordination. Physical signs may include tachycardia, elevated blood pressure, and pupillary dilatation. In rare instances, hallucinogen intoxication may facilitate suicidal ideation and behaviour.
Index terms
- Hallucinogen intoxication
- LSD reaction
- acute hallucinogen intoxication
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- acute intoxication from hallucinogens
- bad trip due to hallucinogens
Excludes
Exclusions from above levels
Sibling codes
6C49.0– Episode of harmful use of hallucinogens6C49.1– Harmful pattern of use of hallucinogens6C49.2– Hallucinogen dependence6C49.4– 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
Hallucinogen intoxication – http://id.who.int/icd/entity/1750279358
Allowed postcoordination axes
Part of: 6C49: Disorders due to use of hallucinogens › 06: Mental, behavioural or neurodevelopmental disorders