07/30/2026
What is Other Specified Feeding or Eating Disorders (OSFED)?
Other Specified Feeding or Eating Disorders (OSFED) was previously known as Eating Disorder Not Otherwise Specified (EDNOS) in past editions of the Diagnostic and Statistical Manual. Despite being considered a ‘catch-all’ classification that was sometimes denied insurance coverage for treatment as it was seen as less serious, OSFED is a serious, life-threatening, but treatable eating disorder. The category was developed to encompass those individuals who did not meet strict diagnostic criteria for anorexia nervosa, bulimia nervosa, or binge eating disorder but still had a significant eating disorder. In community clinics, the majority of individuals were historically diagnosed with EDNOS and more recent research has found that OSFED is the most common eating disorder with approximately 3.8% of women and 1.6% of men being diagnosed with the disorder at some point in their lives.1
Research into the severity of OSFED shows that the disorder is just as severe as other eating disorders based on the following:
Adolescents with OSFED were just as likely to be hospitalized as adolescents diagnosed with anorexia nervosa.2
Individuals diagnosed with OSFED exhibit similar eating disorder symptom severity and cognitive, genetic and environmental risk factors to anorexia nervosa, bulimia nervosa and binge eating disorders.
People with OSFED were just as likely to die as a result of their eating disorder as people with anorexia nervosa, bulimia nervosa, or binge eating disorder. Furthermore, one study found that approximately 33% of the deaths attributed to eating disorders were associated with OSFED, higher than any other type of eating disorder.