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9520
§ 4.130 Schedule of ratings—Mental disorders.

Anorexia nervosa

An eating disorder characterized by restricted food intake, intense fear of weight gain, and distorted body image.

What the rating means

Anorexia nervosa is rated under the Rating Formula for Eating Disorders at diagnostic code 9520. Five ratings are possible: 0%, 10%, 30%, 60%, and 100%.

At 0%, you have a diagnosis of an eating disorder with binge eating followed by self-induced vomiting or other measures to prevent weight gain, or resistance to weight gain even when below expected minimum weight, but no incapacitating episodes. At 10%, the same behaviors are present with incapacitating episodes totaling up to two weeks per year.

The 30% and 60% ratings both require self-induced weight loss to less than 85% of expected minimum weight. At 30%, incapacitating episodes total more than two but less than six weeks per year. At 60%, incapacitating episodes total six or more weeks per year.

The 100% rating requires self-induced weight loss to less than 80% of expected minimum weight, incapacitating episodes totaling at least six weeks per year, and hospitalization more than twice a year for parenteral nutrition or tube feeding.

Evidence that helps

Medical records that document your current weight alongside a calculated expected minimum weight help establish whether you fall below the 80% or 85% thresholds. Records from treating physicians, dietitians, or mental health providers showing a formal eating disorder diagnosis are relevant at every rating level.

For the 10% and higher levels, records showing incapacitating episodes and their total duration across a year are central. Treatment notes, hospitalization records, and discharge summaries can establish how many weeks per year you were incapacitated. At the 100% level, hospital records specifically showing admissions for parenteral nutrition or tube feeding, and how many times per year those occurred, directly address that criterion.

Statements from you or people who know you describing how symptoms affect your ability to work, maintain a regular schedule, or carry out daily activities can help show the real-world impact of incapacitating episodes. Statements should address the frequency and length of those episodes as specifically as possible.

Secondary conditions

Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.