6B80.1

ICD-11 MMS 2026-01

Anorexia Nervosa with dangerously low body weight

Description

Anorexia Nervosa with dangerously low body weight meets all definitional requirements for Anorexia Nervosa, with BMI under 14.0 kg/m² in adults or under the 0.3rd percentile for BMI-for-age in children and adolescents. In the context of Anorexia Nervosa, severe underweight status is an important prognostic factor that is associated with high risk of physical complications and substantially increased mortality.

Exclusions from above levels

  • MG43.7 – Anorexia
  • QE62 – Uncomplicated bereavement
  • QE84 – Acute stress reaction

Child codes

  • 6B80.10 – Anorexia Nervosa with dangerously low body weight, restricting pattern
  • 6B80.11 – Anorexia Nervosa with dangerously low body weight, binge-purge pattern
  • 6B80.1Z – Anorexia Nervosa with dangerously low body weight, unspecified

Sibling codes

  • 6B80.0 – Anorexia Nervosa with significantly low body weight
  • 6B80.2 – Anorexia Nervosa in recovery with normal body weight
  • 6B80.Y – Other specified anorexia Nervosa
  • 6B80.Z – Anorexia Nervosa, unspecified

Foundation entity

Anorexia Nervosa with dangerously low body weight – http://id.who.int/icd/entity/647582417

Allowed postcoordination axes

Part of: 6B80: Anorexia Nervosa › 06: Mental, behavioural or neurodevelopmental disorders