Anorexia nervosa

This code represents a severe eating disorder characterized by a distorted body image, an intense fear of gaining weight, and a refusal to maintain a minimally normal body weight. Patients typically exhibit restrictive eating patterns, excessive exercise, or purging behaviors, leading to significant malnutrition and various medical complications.

Use this code for patients formally diagnosed with anorexia nervosa based on established diagnostic criteria. Documentation should clearly indicate the presence of significantly low body weight, an intense fear of weight gain, and a disturbance in the way one's body weight or shape is experienced.

• Differentiate from other eating disorders like bulimia nervosa (307.51) or atypical eating disorders (307.59).
• Ensure documentation specifies the diagnostic criteria for anorexia nervosa are met, not just general disordered eating.
• Consider sequencing this code as the primary diagnosis when it is the focus of treatment, followed by any associated medical complications.