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Anorexia Nervosa

Classification: Eating Disorder

ICD-9-CM Code: 307.1

ICD-10-CM Code: F50.02

Symptoms: Significantly low body weight, less than minimally expected for age; Extreme preoccupation with behavior that interferes with weight gain; Irrational fear of becoming fat; Eating small amounts of food or binge-eating followed by purging; Disturbed by one’s body weight and shape, causing persistent self-evaluation.

Levels of Severity: The following are body mass index (BMI) percentiles for adults.

  • Mild: BMI ≥ 17 kg/m2
  • Moderate: BMI 16-16.99 kg/m2
  • Severe: BMI 15-15.99 kg/m2
  • Extreme: BMI < 15 kg/m2

Usual Onset: Adolescence/Young Adulthood

Comorbidity: Depressive Disorders, Anxiety Disorders, Bipolar Disorder, Substance Use Disorders

Gender Ratio: Women > Men


  • Cognitive Behavioral Therapy
  • Cognitive Remediation Therapy
  • Family-Based Treatment


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