F50.013
BillableAnorexia nervosa, restricting type, extreme
HCC Category Mapping
V28HCC 153 — Personality Disorders and Dissociative Disorders
1.241RxHCCHCC 133 — Personality Disorders, Anxiety, and Other Specified Mental Disorders
0.000What This Code Means
Anorexia nervosa with restricting type at the most severe level, indicating extreme functional impairment and serious medical complications that pose significant health risks.
Coding Tips
- •Extreme severity is the highest level and indicates life-threatening condition requiring intensive treatment
- •Ensure documentation clearly supports extreme severity with evidence of critical medical complications or dangerously low BMI
Clinical Significance
Anorexia nervosa, restricting type involves weight loss achieved primarily through dieting, fasting, or excessive exercise without binge eating or purging behaviors. Extreme severity with BMI below 15 kg/m2 indicates critical malnutrition with imminent risk of medical complications and death. This subtype carries significant risk for malnutrition, cardiac arrhythmias, and osteoporosis.
Documentation Requirements
- ✓Documentation of restricting behaviors (dieting, fasting, excessive exercise) WITHOUT binge eating or purging
- ✓Current BMI or weight documenting severity level (BMI less than 15 kg/m2)
- ✓Distorted body image or intense fear of weight gain
- ✓Duration and course of illness
- ✓Medical monitoring results (vital signs, electrolytes, cardiac evaluation)
Commonly Confused Codes
F50.02x (Anorexia nervosa, binge eating/purging type) — use when binge/purge behaviors are present in addition to restrictionF50.00 (Anorexia nervosa, unspecified) — use F50.01x when restricting type is specifically documentedF50.82 (Avoidant/restrictive food intake disorder) — food restriction NOT driven by body image disturbance or fear of weight gainR63.0 (Anorexia) — medical loss of appetite, NOT the psychiatric eating disorderE44.0-E44.1 (Protein-calorie malnutrition) — may coexist; code both when documented
Code Hierarchy
└F50Eating disorders└F50.0Anorexia nervosa└F50.01Anorexia nervosa, restricting type└F50.013Anorexia nervosa, restricting type, extreme
└F50.013Anorexia nervosa, restricting type, extreme