Anorexia nervosa, binge eating/purging type, severe

This code identifies a severe form of anorexia nervosa characterized by restrictive eating behaviors combined with recurrent episodes of binge eating and compensatory purging behaviors (e.g., self-induced vomiting, laxative misuse). Individuals with this diagnosis exhibit a significantly low body weight, an intense fear of gaining weight, and a distorted body image.

Assign this code when documentation clearly indicates a diagnosis of anorexia nervosa with a binge eating/purging subtype, and the severity is explicitly stated as "severe." Severity is typically determined by BMI (e.g., BMI < 15 kg/m² for adults) or the degree of functional impairment and medical instability.

• Ensure the medical record specifies both the "binge eating/purging type" and "severe" severity.
• Do not confuse with F50.01 (Anorexia nervosa, restricting type) or F50.2 (Bulimia nervosa), which have different diagnostic criteria.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter or admission.