ICD-10 Code F50.021 – Anorexia nervosa, binge eating/purging type, moderate (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F50.021 – Anorexia nervosa, binge eating/purging type, moderate
What it is
This code identifies anorexia nervosa with both binge-eating and purging behavior, documented as moderate in severity. It indicates a restrictive eating disorder with significant weight and body-image disturbance; check documentation for severity details.
Clinical signs
Typical findings include intense fear of weight gain, distorted body image, and recurrent bingeing followed by purging behaviors such as vomiting or laxative misuse. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states anorexia nervosa with binge-eating/purging type and specifies moderate severity. You should also use it when the provider documents the diagnosis in assessment, discharge, or problem lists and no conflicting subtype is recorded.
Do not use for
Do not use this code for anorexia nervosa without binge/purge behavior, for unspecified severity, or for eating disorders documented as bulimia nervosa. Check documentation if the subtype or severity is unclear.
Coding tip
Match both the subtype and severity in the note before assigning F50.021.