6C43.5ICD-11 MMS 2026-01
Opioid-induced delirium
Description
Opioid-induced delirium is characterised by an acute state of disturbed attention and awareness with specific features of delirium that develops during or soon after substance intoxication or withdrawal or during the use of opioids. The amount and duration of opioid use must be capable of producing delirium. The symptoms are not better explained by a primary mental disorder, by use of or withdrawal from a different substance, or by another health condition that is not classified under Mental, Behavioural, and Neurodevelopmental Disorders.
Index terms
- Opioid-induced delirium
- Delirium induced by opioid withdrawal
- Delirium induced by opioid withdrawal, with seizures
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- Delirium induced by opioid withdrawal, without seizures
Inclusions
- Delirium induced by opioid withdrawal
Exclusions from above levels
Sibling codes
6C43.0– Episode of harmful use of opioids6C43.1– Harmful pattern of use of opioids6C43.2– Opioid dependence6C43.3– Opioid intoxication6C43.4– Opioid withdrawal6C43.6– Opioid-induced psychotic disorder6C43.7– Certain specified opioid-induced mental or behavioural disorders6C43.Y– Other specified disorders due to use of opioids6C43.Z– Disorders due to use of opioids, unspecified
Foundation entity
Opioid-induced delirium – http://id.who.int/icd/entity/1416205973
Allowed postcoordination axes
Part of: 6C43: Disorders due to use of opioids › 06: Mental, behavioural or neurodevelopmental disorders