ICD-11 MMS

06 Mental, behavioural or neurodevelopmental disorders

Disorders due to substance use or addictive behaviours  (6C40-6C5Z)

Disorders due to substance use  (6C40-6C4Z)

6C4G Disorders due to use of unknown or unspecified psychoactive substances

Harmful pattern of use of unknown or unspecified psychoactive substance

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01


A pattern of use of an unknown or unspecified psychoactive substance 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 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 substance intoxication on the part of the person to whom the diagnosis of Harmful pattern of use of unknown or unspecified psychoactive substance applies.

exclusions

sections/codes in this section (6C4G.1-6C4G.1)

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