F50.1 is the ICD-10 code for Atypical anorexia nervosa. It is a four-character subcategory of F50 (Eating disorders), the most specific level in the WHO edition. It belongs to the block F50–F59 (Behavioural syndromes associated with physiological disturbances and physical factors) in Chapter V, Mental and behavioural disorders.
- Code type
- Subcategory (4 characters)
- Chapter
- V · F00–F99
- Classification
- WHO ICD-10, 2019 version
Definition
Disorders that fulfil some of the features of anorexia nervosa but in which the overall clinical picture does not justify that diagnosis. For instance, one of the key symptoms, such as amenorrhoea or marked dread of being fat, may be absent in the presence of marked weight loss and weight-reducing behaviour. This diagnosis should not be made in the presence of known physical disorders associated with weight loss.
F50.1 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
F50.1Atypisk anorexia nervosa
DF501Atypisk nervøs spisevægring
F50.1Epätyypillinen laihuushäiriö
F50.1Atypische Anorexia nervosa
F50.1Anorexie mentale atypique
F50.1atypische anorexia nervosa
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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