6B23

ICD-11 MMS 2026-01

Hypochondriasis

Description

Hypochondriasis is characterised by persistent preoccupation or fear about the possibility of having one or more serious, progressive or life-threatening illnesses. The preoccupation is accompanied by either: 1) repetitive and excessive health-related behaviours, such as repeatedly checking the body for evidence of illness, spending inordinate amounts of time searching for information about the feared illness, repeatedly seeking reassurance (e.g. arranging multiple medical consultations); or 2) maladaptive avoidance behaviour related to health (e.g. avoids medical appointments). The symptoms result in significant distress or significant impairment in personal, family, social, educational, occupational or other important areas of functioning.

Inclusions

  • Hypochondriacal neurosis
  • Illness anxiety disorder

Excludes

  • 6B21 – Body dysmorphic disorder
  • 6C20 – Bodily distress disorder
  • MG24.0 – Fear of cancer

Exclusions from above levels

  • QE62 – Uncomplicated bereavement
  • QE84 – Acute stress reaction

Child codes

  • 6B23.0 – Hypochondriasis with fair to good insight
  • 6B23.1 – Hypochondriasis with poor to absent insight
  • 6B23.Z – Hypochondriasis, unspecified

Sibling codes

  • 6B20 – Obsessive-compulsive disorder
  • 6B21 – Body dysmorphic disorder
  • 6B22 – Olfactory reference disorder
  • 6B24 – Hoarding disorder
  • 6B25 – Body-focused repetitive behaviour disorders
  • 6B2Y – Other specified obsessive-compulsive or related disorders
  • 6B2Z – Obsessive-compulsive or related disorders, unspecified

Foundation entity

Hypochondriasis – http://id.who.int/icd/entity/675329566

Allowed postcoordination axes

Part of: 06: Mental, behavioural or neurodevelopmental disorders