01 Certain infectious or parasitic diseases

 02 Neoplasms

 03 Diseases of the blood or blood-forming organs

 04 Diseases of the immune system

 05 Endocrine, nutritional or metabolic diseases

 06 Mental, behavioural or neurodevelopmental disorders

   Neurodevelopmental disorders

   Schizophrenia or other primary psychotic disorders

   Catatonia

   Mood disorders

   Anxiety or fear-related disorders

   Obsessive-compulsive or related disorders

     6B20  Obsessive-compulsive disorder

     6B21  Body dysmorphic disorder

     6B22  Olfactory reference disorder

     6B23  Hypochondriasis

     6B24  Hoarding disorder

     6B25  Body-focused repetitive behaviour disorders

     6B2Y  Other specified obsessive-compulsive or related disorders

     6B2Z  Obsessive-compulsive or related disorders, unspecified

   Disorders specifically associated with stress

   Dissociative disorders

   Feeding or eating disorders

   Elimination disorders

   Disorders of bodily distress or bodily experience

   Disorders due to substance use or addictive behaviours

   Impulse control disorders

   Disruptive behaviour or dissocial disorders

   Personality disorders and related traits

   Paraphilic disorders

   Factitious disorders

   Neurocognitive disorders

   Mental or behavioural disorders associated with pregnancy, childbirth or the puerperium

   6E40  Psychological or behavioural factors affecting disorders or diseases classified elsewhere

   Secondary mental or behavioural syndromes associated with disorders or diseases classified elsewhere

   6E8Y  Other specified mental, behavioural or neurodevelopmental disorders

   6E8Z  Mental, behavioural or neurodevelopmental disorders, unspecified

 07 Sleep-wake disorders

 08 Diseases of the nervous system

 09 Diseases of the visual system

 10 Diseases of the ear or mastoid process

 11 Diseases of the circulatory system

 12 Diseases of the respiratory system

 13 Diseases of the digestive system

 14 Diseases of the skin

 15 Diseases of the musculoskeletal system or connective tissue

 16 Diseases of the genitourinary system

 17 Conditions related to sexual health

 18 Pregnancy, childbirth or the puerperium

 19 Certain conditions originating in the perinatal period

 20 Developmental anomalies

 21 Symptoms, signs or clinical findings, not elsewhere classified

 22 Injury, poisoning or certain other consequences of external causes