ICD-11 classes
06 Mental, behavioural or neurodevelopmental disorders
Disorders due to substance use or addictive behaviours
Disorders due to substance use
6C4G — Disorders due to use of unknown or unspecified psychoactive...

ICD-11 6C4G — Disorders due to use of unknown or unspecified psychoactive substances

Disorders due to use of unknown or unspecified psychoactive substances are characterised by the pattern and consequences of psychoactive substance use when the specific substance is unknown or unspecified. These categories may be used in clinical situations in which it is clear that the disturbance is due to substance use but the specific class of substance is unknown. Once the relevant substance is identified, the disturbance should be recoded under the appropriate substance class.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis with code 6C4G contains 10 clarifying diagnoses:

1. 6C4G.0 — Episode of harmful use of unknown or unspecified psychoactive substances
2. 6C4G.1 — Harmful pattern of use of unknown or unspecified psychoactive substance
   It contains 3 clarifying diagnoses.
3. 6C4G.2 — Unknown or unspecified psychoactive substance dependence
   It contains 5 clarifying diagnoses.
4. 6C4G.3 — Intoxication due to unknown or unspecified psychoactive substance
5. 6C4G.4 — Withdrawal due to unknown or unspecified psychoactive substance
   It contains 5 clarifying diagnoses.
6. 6C4G.5 — Delirium induced by unknown or unspecified psychoactive substance
7. 6C4G.6 — Psychotic disorder induced by unknown or unspecified psychoactive substance
8. 6C4G.7 — Certain unknown or unspecified psychoactive substance-induced mental or behavioural disorders
   It contains 4 clarifying diagnoses.
9. 6C4G.Y — Other specified disorders due to use of unknown or unspecified psychoactive substances
10. 6C4G.Z — Disorders due to use of unknown or unspecified psychoactive substances, unspecified