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ICD-10 Guide
ICD-10 CodesF50.010

F50.010

Billable

Anorexia nervosa, restricting type, mild

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 F50.010 is a billable code used to indicate a diagnosis of anorexia nervosa, restricting type, mild.

Key Diagnostic Point:

Anorexia nervosa is a serious eating disorder characterized by an intense fear of gaining weight and a distorted body image, leading to self-imposed starvation and excessive weight loss. The 'restricting type' indicates that the individual primarily engages in dieting, fasting, or excessive exercise without the regular use of binge-eating or purging behaviors. The 'mild' designation refers to a Body Mass Index (BMI) of 17 or higher but less than 18.5, indicating that the individual is underweight but not severely so. This condition can lead to severe physical and psychological complications, including electrolyte imbalances, cardiovascular issues, and mental health disorders such as anxiety and depression. Early diagnosis and intervention are crucial for improving outcomes, and treatment typically involves a multidisciplinary approach, including nutritional rehabilitation, psychotherapy, and medical monitoring.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between types of anorexia nervosa (restricting vs. binge-eating/purging)
  • Understanding the severity classification based on BMI
  • Documenting comorbid mental health conditions
  • Navigating the nuances of eating disorder terminology

Audit Risk Factors

  • Inadequate documentation of BMI and weight history
  • Failure to document the patient's eating behaviors and psychological state
  • Misclassification of the type of anorexia nervosa
  • Lack of evidence for medical necessity of treatment

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Detailed psychiatric evaluation, including mental status examination and history of eating behaviors.

Common Clinical Scenarios

Patients presenting with anxiety, depression, or social withdrawal related to body image issues.

Billing Considerations

Consideration of comorbid mental health disorders and their impact on treatment.

Nutrition

Documentation Requirements

Comprehensive dietary assessments and nutritional counseling records.

Common Clinical Scenarios

Patients requiring nutritional rehabilitation and education on healthy eating habits.

Billing Considerations

Monitoring of weight changes and nutritional intake is critical for accurate coding.

Coding Guidelines

Inclusion Criteria

Use F50.010 When
  • According to ICD
  • 10 guidelines, F50
  • 010 should be used when the patient meets the criteria for anorexia nervosa, restricting type, and has a mild severity classification
  • Documentation must support the diagnosis, including BMI and behavioral patterns

Exclusion Criteria

Do NOT use F50.010 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

97802CPT Code

Medical nutrition therapy, individual

Clinical Scenario

Used for patients diagnosed with anorexia nervosa requiring nutritional counseling.

Documentation Requirements

Documentation of the patient's nutritional status and treatment goals.

Specialty Considerations

Nutrition specialists should ensure that the treatment plan aligns with the diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of anorexia nervosa, enabling better tracking of treatment outcomes and resource allocation. The detailed classification helps in understanding the severity and type of eating disorders more effectively.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of anorexia nervosa, enabling better tracking of treatment outcomes and resource allocation. The detailed classification helps in understanding the severity and type of eating disorders more effectively.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of anorexia nervosa, enabling better tracking of treatment outcomes and resource allocation. The detailed classification helps in understanding the severity and type of eating disorders more effectively.

Resources

Clinical References

  • •
    National Eating Disorders Association

Coding & Billing References

  • •
    National Eating Disorders Association

Frequently Asked Questions

What is the difference between anorexia nervosa, restricting type, and binge-eating/purging type?

The restricting type involves weight loss through dieting and exercise without binge-eating or purging, while the binge-eating/purging type includes episodes of binge-eating followed by purging behaviors.