ICD-11 classes
06 Mental, behavioural or neurodevelopmental disorders
Disorders due to substance use or addictive behaviours
Disorders due to substance use
6C43 — Disorders due to use of opioids
6C43.1 — Harmful pattern of use of opioids

ICD-11 6C43.1 — Harmful pattern of use of opioids

A pattern of use of opioids 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 opioid 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) 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 opioid intoxication on the part of the person to whom the diagnosis of Harmful pattern of use of opioids applies.

The diagnosis includes nothing.

Diagnosis with code 6C43.1 contains 3 clarifying diagnoses:

1. 6C43.10 — Harmful pattern of use of opioids, episodic
2. 6C43.11 — Harmful pattern of use of opioids, continuous
3. 6C43.1Z — Harmful pattern of use of opioids, unspecified