6C4G.3

ICD-11 MMS 2026-01

Intoxication due to unknown or unspecified psychoactive substance

Description

Intoxication due to unknown or unspecified psychoactive substance is a transient condition that develops during or shortly after the administration of an unknown or unspecified psychoactive substance that is characterised by disturbances in level of consciousness, cognition, perception, affect or behaviour, or other psychophysiological functions and responses. This diagnosis should be made only when there is strong evidence that an unidentified substance has been taken and the features cannot be accounted for by another disorder or disease.

Index terms

  • Intoxication due to unknown or unspecified psychoactive substance
  • drug intoxication NOS
  • psychoactive substance abuse
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  • trance and possession disorders in psychoactive substance intoxication

Exclusions from above levels

  • QE62 – Uncomplicated bereavement
  • QE84 – Acute stress reaction

Sibling codes

  • 6C4G.0 – Episode of harmful use of unknown or unspecified psychoactive substances
  • 6C4G.1 – Harmful pattern of use of unknown or unspecified psychoactive substance
  • 6C4G.2 – Unknown or unspecified psychoactive substance dependence
  • 6C4G.4 – Withdrawal due to unknown or unspecified psychoactive substance
  • 6C4G.5 – Delirium induced by unknown or unspecified psychoactive substance
  • 6C4G.6 – Psychotic disorder induced by unknown or unspecified psychoactive substance
  • 6C4G.7 – Certain unknown or unspecified psychoactive substance-induced mental or behavioural disorders
  • 6C4G.Y – Other specified disorders due to use of unknown or unspecified psychoactive substances
  • 6C4G.Z – Disorders due to use of unknown or unspecified psychoactive substances, unspecified

Foundation entity

Intoxication due to unknown or unspecified psychoactive substance – http://id.who.int/icd/entity/1870346724

Allowed postcoordination axes

Part of: 6C4G: Disorders due to use of unknown or unspecified psychoactive substances › 06: Mental, behavioural or neurodevelopmental disorders