6C40.1

ICD-11 MMS 2026-01

Harmful pattern of use of alcohol

Description

A pattern of alcohol use 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 alcohol use is evident over a period of at least 12 months if substance use is episodic or at least one month if use is continuous. 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 alcohol intoxication on the part of the person to whom the diagnosis of Harmful pattern of use of alcohol applies.

Excludes

  • 6C40.0 – Episode of harmful use of alcohol
  • 6C40.2 – Alcohol dependence

Exclusions from above levels

  • QE10 – Hazardous alcohol use
  • QE62 – Uncomplicated bereavement
  • QE84 – Acute stress reaction

Child codes

  • 6C40.10 – Harmful pattern of use of alcohol, episodic
  • 6C40.11 – Harmful pattern of use of alcohol, continuous
  • 6C40.1Z – Harmful pattern of use of alcohol, unspecified

Sibling codes

  • 6C40.0 – Episode of harmful use of alcohol
  • 6C40.2 – Alcohol dependence
  • 6C40.3 – Alcohol intoxication
  • 6C40.4 – Alcohol withdrawal
  • 6C40.5 – Alcohol-induced delirium
  • 6C40.6 – Alcohol-induced psychotic disorder
  • 6C40.7 – Certain specified alcohol-induced mental or behavioural disorders
  • 6C40.Y – Other specified disorders due to use of alcohol
  • 6C40.Z – Disorders due to use of alcohol, unspecified

Foundation entity

Harmful pattern of use of alcohol – http://id.who.int/icd/entity/714690795

Allowed postcoordination axes

Part of: 6C40: Disorders due to use of alcohol › 06: Mental, behavioural or neurodevelopmental disorders