ICD-10 Code F50.9 – Eating disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F50.9 – Eating disorder, unspecified
What it is
F50.9 identifies an eating disorder when the record does not specify a more exact type. Use it for clinically significant disordered eating behavior, but the documentation does not support anorexia nervosa, bulimia nervosa, or another named diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include abnormal eating patterns, distress about food or weight, and impaired nutrition or functioning, but the chart must support an eating disorder diagnosis.
When to use this code
Use F50.9 when the provider documents “eating disorder” without further detail, or when the presentation is clearly an eating disorder but the exact subtype is not stated. It is also appropriate when the note does not allow you to assign a more specific code.
Do not use for
Do not use this code if the documentation identifies a specific eating disorder such as anorexia nervosa or bulimia nervosa. Also avoid it when the record only describes diet concerns, obesity, or weight loss without an eating disorder diagnosis.
Coding tip
If the subtype is missing, query for clarification before defaulting to F50.9.