On this page
VA uses a separate eating-disorder formula for anorexia nervosa under DC 9520 and bulimia nervosa under DC 9521. Unlike the general mental-health formula, these ratings turn on self-induced weight loss, incapacitating episodes, and, at the 100-percent level, repeated hospitalization for parenteral nutrition or tube feeding.
The definition of an incapacitating episode is unusually strict: a period during which bed rest and treatment by a physician are required. Severe symptoms, missed work, or self-directed rest may be important evidence, but they do not automatically satisfy that regulatory definition.
TL;DR
- Anorexia nervosa is DC 9520; bulimia nervosa is DC 9521.
- Both use the same special formula with 0, 10, 30, 60, and 100-percent levels.
- The higher tiers depend on percentages of expected minimum weight and physician-required incapacitating episodes.
- A 100-percent rating also requires more than two hospitalizations per year for parenteral nutrition or tube feeding.
- “Incapacitating episode” means physician-required bed rest and treatment, not simply a severe flare.
- Eating disorders can affect people at any body weight; the medical diagnosis and compensation formula are related but not identical questions.
- Direct onset and secondary causation or aggravation may be viable, but a case-specific mental-health opinion must establish the link.
- Symptoms already used to rate another mental disorder cannot be compensated twice.
The Current Eating-Disorder Rating Formula
38 CFR § 4.130 provides these criteria for DCs 9520 and 9521:
100 percent
Self-induced weight loss to less than 80 percent of expected minimum weight, with incapacitating episodes totaling at least six weeks per year, and hospitalization more than twice per year for parenteral nutrition or tube feeding.
60 percent
Self-induced weight loss to less than 85 percent of expected minimum weight, with incapacitating episodes totaling at least six weeks per year.
30 percent
Self-induced weight loss to less than 85 percent of expected minimum weight, with incapacitating episodes totaling more than two but less than six weeks per year.
10 percent
Binge eating followed by self-induced vomiting or other behavior intended to prevent weight gain, or resistance to weight gain even when below expected minimum weight, with a diagnosis and incapacitating episodes totaling up to two weeks per year.
0 percent
The same qualifying eating behavior and diagnosis, but without incapacitating episodes.
The regulation defines an incapacitating episode as a period during which bed rest and treatment by a physician are required. Treatment notes should identify the prescribed restriction and dates. A retrospective summary that merely labels several months “incapacitating” is less useful than contemporaneous orders and treatment records.
Diagnosis and Medical Evidence
The National Institute of Mental Health describes eating disorders as serious illnesses, not choices. Anorexia may involve severe restriction, fear of weight gain, and distorted body image. Bulimia involves recurrent binge eating followed by behavior intended to prevent weight gain, such as forced vomiting or laxative misuse. People with eating disorders can be underweight, average weight, or overweight.
That medical reality creates an important compensation distinction. A person may have a serious diagnosed eating disorder without meeting the higher VA tiers, because the schedule uses particular weight and incapacitation thresholds. Conversely, a compensation evaluation should not replace clinical treatment or minimize medical risk.
Useful evidence includes:
- diagnostic and psychotherapy records;
- nutrition and weight-history records using consistent units and dates;
- hospitalization, tube-feeding, or parenteral-nutrition records;
- physician orders for bed rest and treatment;
- dental evidence of erosion when medically attributed to purging;
- laboratory and medical records showing complications; and
- lay evidence describing observable behavior and functional effects.
Direct Service Connection
Direct service connection under § 3.303 may apply when the disorder began in service. Evidence may appear in mental-health records, nutrition referrals, dental records, repeated weight changes, fitness or body-composition records, or lay statements.
Military weight standards should not be presented as the cause in every case. The clinician must evaluate this veteran's history and explain whether the in-service environment, trauma, symptoms, or treatment marked the onset of the current disorder.
Secondary Causation or Aggravation
Under § 3.310, an eating disorder may be claimed as caused or aggravated by a service-connected condition, including PTSD or depression, when competent medical evidence establishes that relationship. MST itself is an event rather than a service-connected diagnosis; the cleaner secondary theory usually runs through the diagnosed service-connected condition caused by MST.
For aggravation, the opinion should identify the baseline and the current severity and explain whether the eating disorder would be less severe but for the service-connected condition, including when that condition got in the way of treatment. VA's claims manual, M21-1 V.ii.2.D (changed May 1, 2026 to follow Spicer v. McDonough), applies that but-for test and no longer considers natural progress in these claims, even though the text of § 3.310(b) still mentions it, and the worsening does not have to be permanent. VA still needs a baseline and rates the difference between the baseline and the current severity; an increase too small to change the rating level is granted at 0 percent. A general article showing that two conditions can co-occur does not establish causation or aggravation in an individual claim.
Separate Ratings and Pyramiding
Eating disorders use a different formula from PTSD, depression, and anxiety, but that does not guarantee separate compensation. Section 4.14 prohibits rating the same manifestations twice.
The record should distinguish eating-disorder behaviors and incapacitating episodes from appetite changes, sleep problems, anxiety, or occupational impairment already attributed to another mental disorder. If clinicians cannot separate the effects, VA may need to avoid duplicate ratings while still considering the complete impairment under the appropriate evaluation.
Medical complications can raise separate issues when they are diagnosed, causally linked, and functionally distinct. The claim should not assume that every laboratory abnormality or symptom receives its own rating.
What the C&P Record Should Establish
The record should answer:
- Is the diagnosis anorexia nervosa, bulimia nervosa, or another eating disorder?
- Which diagnostic code and rating formula apply?
- What is the expected minimum weight used by the clinician, and what records support it?
- Was any weight loss self-induced within the meaning of the schedule?
- What physician-required bed-rest and treatment periods occurred in the last 12 months?
- Were there qualifying hospitalizations for parenteral nutrition or tube feeding?
- When did the disorder begin, and what medical opinion links it to service or a service-connected condition?
- Which symptoms overlap with another mental-health rating?
Common Failure Modes
- Applying the general mental-health percentage formula instead of the eating-disorder formula.
- Calling any severe period an incapacitating episode without physician-required bed rest and treatment.
- Using a current weight alone without a dated weight history or expected-minimum-weight analysis.
- Assuming all eating disorders fit DC 9520 or 9521 without addressing the actual diagnosis.
- Treating MST as the secondary primary disability instead of identifying the diagnosed service-connected condition.
- Seeking duplicate compensation for symptoms already rated under PTSD, depression, or anxiety.
- Letting the compensation thresholds delay urgent clinical treatment.
Bottom Line
An eating-disorder claim needs two parallel records: a clinically sound diagnosis and a regulatory record that documents the specific weight, physician-required incapacitation, and intensive-nutrition criteria. For service connection, the opinion should explain onset, causation, or aggravation using the veteran's actual history and distinguish overlapping mental-health symptoms.
Legal and medical sources: 38 CFR § 4.130, § 3.303, § 3.310, § 4.14, and NIMH eating-disorder guidance, checked August 14, 2026. Secondary aggravation guidance from M21-1 V.ii.2.D (change date May 1, 2026), checked September 24, 2026.