ICD-11 classes
06 Mental, behavioural or neurodevelopmental disorders
Disorders due to substance use or addictive behaviours
Disorders due to substance use
6C4A — Disorders due to use of nicotine
6C4A.1 — Harmful pattern of use of nicotine

ICD-11 6C4A.1 — Harmful pattern of use of nicotine

A pattern of nicotine use that has caused damage to a person’s physical or mental health. The pattern of nicotine 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 (i.e., daily or almost daily). Harm to health of the individual occurs due to one or more of the following: (1) direct or secondary toxic effects on body organs and systems; or (2) a harmful route of administration.

The diagnosis includes nothing.

Diagnosis with code 6C4A.1 contains 3 clarifying diagnoses:

1. 6C4A.10 — Harmful pattern of use of nicotine, episodic
2. 6C4A.11 — Harmful pattern of use of nicotine, continuous
3. 6C4A.1Z — Harmful pattern of use of nicotine, unspecified