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F50.01 - ICD-10 Code for Anorexia Restricting Type Explained

A women ill with sit on chair Anorexia Nervosa profession use the code for treatment F50.01.

If you’re a healthcare provider, coder, or caregiver, understanding ICD-10 code F50.01 is critical for diagnosing and medical billing anorexia nervosa, restricting type. Let’s break down what this code means, its symptoms, and how to use it accurately.

What Is ICD-10 Code F50.01?

F50.01 classifies anorexia nervosa, as a restricting type, where weight loss occurs through fasting, dieting, or excessive exercise without binge-eating or purging behaviors. This code is billable and used in medical documentation to specify this subtype.

Key Diagnosis Criteria for F50.01

To assign F50.01, patients must meet these DSM-5 guidelines:

  • Severely restricted calorie intake leads to low body weight.
  • Intense fear of gaining weight despite being underweight.
  • Distorted body image or denial of the seriousness of their condition.
  • Absence of binge-eating or purging (e.g., vomiting, laxatives).

Symptoms of Restricting-Type Anorexia

  • Rapid weight loss or failure to gain weight (in adolescents).
  • Obsession with food calories, dieting, or meal rituals.
  • Fatigue, dizziness, or thinning hair.
  • Social withdrawal related to eating habits.

How F50.01 Differs from Other Anorexia Codes

  • F50.00: Anorexia nervosa, unspecified (used when restricting or binge-eating/purging type isn’t documented).
  • F50.02: Anorexia nervosa, binge-eating/purging type (includes vomiting or laxative misuse).

Always confirm the subtype in patient records to avoid coding errors.

Billing Tips for F50.01

  • Document behaviors clearly: Note the absence of binging/purging.
  • Link to supporting diagnoses: Malnutrition (E43), electrolyte imbalances (E87.8).
  • Use Z codes: For factors like family conflict (Z63.8) or social pressures (Z55-Z65).

Treatment Options

  • Medical stabilization: Address malnutrition or heart complications.
  • Therapy: Cognitive Behavioral Therapy (CBT) or Family-Based Treatment (FBT).
  • Nutritional counseling: Meal plans to restore healthy eating patterns.

Final Thoughts

Accurate use of F50.01 ensures proper care and reimbursement for patients with restricting-type anorexia. Always pair coding with detailed clinical notes to reflect the patient’s unique condition.

Need help? 

Consult the latest ICD-10-CM manual or your facility’s coding team for complex cases.

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Yes, it’s a valid, billable ICD-10 code.

Yes, if they meet the criteria. Specify growth charts in documentation.

Update the code (e.g., to F50.02 if purging begins).

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