ICD-10 Code F50.011 – Anorexia nervosa, restricting type, moderate (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F50.011 – Anorexia nervosa, restricting type, moderate
What it is
Use this code for anorexia nervosa with a restricting pattern and moderate severity. It identifies a clinically significant eating disorder in which weight-loss behavior is driven by restriction rather than bingeing or purging.
Clinical signs
Typical findings include restrictive food intake, intense fear of gaining weight, and distorted body image. Clinical features vary; refer to documentation for severity, nutritional status, and whether purging behaviors are absent.
When to use this code
Assign F50.011 when the record clearly states anorexia nervosa, restricting type, moderate. Use it when the clinician documents a moderate level of illness and specifies the restricting subtype rather than binge-eating or purging behaviors.
If the note only says anorexia nervosa, check documentation for the subtype and severity before coding. This code should match the provider’s final diagnostic wording, not a suspected eating disorder or historical mention alone.
Do not use for
Do not use this code for anorexia from another medical cause, unspecified eating disorder, or anorexia nervosa with binge-eating/purging features. Check documentation if the subtype or severity is unclear.
Coding tip
Confirm both the restricting subtype and moderate severity in the provider’s assessment before assigning F50.011.