6C4H.1

ICD-11 MMS 2026-01

Harmful pattern of use of non-psychoactive substances

Description

A pattern of use of non-psychoactive substances that has caused clinically significant harm to a person’s physical or mental health. The pattern of use is evident over a period of at least 12 months if use is episodic and at least one month if use is continuous (i.e., daily or almost daily). Harm may be caused by the direct or secondary toxic effects of the substance on body organs and systems, or a harmful route of administration.

Excludes

  • 6C4E.1 – Harmful pattern of use of other specified psychoactive substance
  • 6C4H.0 – Episode of harmful use of non-psychoactive substances

Exclusions from above levels

  • QE62 – Uncomplicated bereavement
  • QE84 – Acute stress reaction

Child codes

  • 6C4H.10 – Harmful pattern of use of non-psychoactive substances, episodic
  • 6C4H.11 – Harmful pattern of use of non-psychoactive substances, continuous
  • 6C4H.1Z – Harmful pattern of use of non-psychoactive substances, unspecified

Sibling codes

  • 6C4H.0 – Episode of harmful use of non-psychoactive substances
  • 6C4H.Y – Other specified disorders due to use of non-psychoactive substances
  • 6C4H.Z – Disorders due to use of non-psychoactive substances, unspecified

Foundation entity

Harmful pattern of use of non-psychoactive substances – http://id.who.int/icd/entity/2055037621

Allowed postcoordination axes

Part of: 6C4H: Disorders due to use of non-psychoactive substances › 06: Mental, behavioural or neurodevelopmental disorders