# 148 - Substance induced mental disorders

# Substance-induced mental disorders

Clinical Descriptions and Diagnostic Requirements for ICD-11 Mental, Behavioural or Neurodevelopmental Disorders
Substance-induced mental disorders
Substance-induced mental disorders are characterized by psychological, cognitive or behavioural 
symptoms that develop during or soon after psychoactive substance intoxication or withdrawal, 
or use or discontinuation of a psychoactive medication. The duration or severity of the symptoms 
is substantially in excess of the characteristic syndrome of substance intoxication or substance 
withdrawal due to the specified substance.
Substance-induced mental disorders include:
Substance-induced delirium
Substance-induced psychotic disorder
• with hallucinations
• with delusions
• with mixed psychotic symptoms
Substance-induced mood disorder
• with depressive symptoms
• with manic symptoms
• with mixed depressive and manic symptoms
Substance-induced anxiety disorder
Substance-induced obsessive-compulsive or related disorder
Substance-induced impulse control disorder.
Specific types of substance-induced mental disorders are only applicable for some substance 
classes, which are listed along with corresponding codes in the sections on specific substanceinduced mental disorders below, as well as in Table 6.14 (p. 454). Specific substance-induced mental 
disorders may characteristically have their onset during or soon after substance intoxication and/
or substance withdrawal for specific substances or substance classes.
When making a diagnosis of substance-induced mental disorder, an additional diagnosis 
indicating the related pattern of substance use should also be assigned. These include episode of 
harmful psychoactive substance use, harmful pattern of psychoactive substance use and substance 
dependence. A diagnosis of substance intoxication or substance withdrawal may also be assigned 
if applicable.
Additional categories of substance-induced disorders are included in other groupings of this 
chapter on mental, behavioural and neurodevelopmental disorders, and CDDR are provided in the 
corresponding sections. These categories are cross-listed in this section for reference, and include:
6A41 
Catatonia induced by substances or medications (p. 204).
6D70.1 
Delirium due to psychoactive substances, including medications (p. 606).
6D72.1 
Amnestic disorder due to psychoactive substances, including medications 
(p. 616).
6D84 
Dementia due to psychoactive substances, including medications (p. 626).
Essential features for each substance-induced mental disorder category are provided below, 
as are any specifiers corresponding to specific disorders. Other CDDR elements – additional 
clinical features, boundary with normality (threshold) and boundaries with other disorders and 
conditions (differential diagnosis) – apply to all substance-induced mental disorder categories 
and are provided at the end of this section.
Diagnostic requirements for disorders due to substance use | Substance-induced mental disorders