ICD-11 classes
06 Mental, behavioural or neurodevelopmental disorders
Obsessive-compulsive or related disorders

ICD-11 Obsessive-compulsive or related disorders

Obsessive-compulsive and related disorders is a group of disorders characterised by repetitive thoughts and behaviours that are believed to share similarities in aetiology and key diagnostic validators. Cognitive phenomena such as obsessions, intrusive thoughts and preoccupations are central to a subset of these conditions (i.e., obsessive-compulsive disorder, body dysmorphic disorder, hypochondriasis, and olfactory reference disorder) and are accompanied by related repetitive behaviours. Hoarding Disorder is not associated with intrusive unwanted thoughts but rather is characterised by a compulsive need to accumulate possessions and distress related to discarding them. Also included in the grouping are body-focused repetitive behaviour disorders, which are primarily characterised by recurrent and habitual actions directed at the integument (e.g., hair-pulling, skin-picking) and lack a prominent cognitive aspect. The symptoms result in significant distress or significant impairment in personal, family, social, educational, occupational, or other important areas of functioning.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis contains 11 clarifying diagnoses:

1. 6B20 — Obsessive-compulsive disorder
   It contains 3 clarifying diagnoses.
2. 6B21 — Body dysmorphic disorder
   It contains 3 clarifying diagnoses.
3. 6B22 — Olfactory reference disorder
   It contains 3 clarifying diagnoses.
4. 6B23 — Hypochondriasis
   It contains 3 clarifying diagnoses.
5. 6B24 — Hoarding disorder
   It contains 3 clarifying diagnoses.
6. 6B25 — Body-focused repetitive behaviour disorders
   It contains 4 clarifying diagnoses.
7. Substance-induced obsessive-compulsive or related disorders
   It contains 6 clarifying diagnoses.
8. 6E64 — Secondary obsessive-compulsive or related syndrome
9. 8A05.00 — Tourette syndrome
10. 6B2Y — Other specified obsessive-compulsive or related disorders
11. 6B2Z — Obsessive-compulsive or related disorders, unspecified