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v1.0.0
ICD-10 Guide
ICD-10 CodesF50.020

F50.020

Billable

Anorexia nervosa, binge eating/purging type, mild

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

Code Description

ICD-10 F50.020 is a billable code used to indicate a diagnosis of anorexia nervosa, binge eating/purging type, mild.

Key Diagnostic Point:

Anorexia nervosa, binge eating/purging type, mild, is characterized by a significant restriction of energy intake relative to requirements, leading to a markedly low body weight in the context of age, sex, developmental trajectory, and physical health. Individuals with this subtype engage in recurrent episodes of binge eating or purging behaviors, such as self-induced vomiting or misuse of laxatives, diuretics, or enemas. The 'mild' designation indicates that the individual has a body mass index (BMI) of 17 or greater but less than 18.5. This condition often coexists with other mental health disorders, including anxiety and depression, and can lead to severe physical health complications, including electrolyte imbalances, cardiovascular issues, and gastrointestinal problems. Early identification 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 and other eating disorders.
  • Understanding the severity classification based on BMI.
  • Documenting the presence of binge eating or purging behaviors accurately.
  • Navigating co-morbid mental health conditions.

Audit Risk Factors

  • Inadequate documentation of BMI and weight history.
  • Failure to document binge eating or purging behaviors.
  • Misclassification of the severity of the disorder.
  • Lack of comprehensive treatment plans in medical records.

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Detailed mental health assessments, treatment plans, and progress notes.

Common Clinical Scenarios

Initial evaluations, ongoing therapy sessions, and medication management.

Billing Considerations

Documentation must clearly outline the psychological impact of the disorder and any co-occurring mental health issues.

Nutrition

Documentation Requirements

Nutritional assessments, dietary plans, and monitoring of weight changes.

Common Clinical Scenarios

Nutritional counseling sessions and follow-up appointments.

Billing Considerations

Accurate tracking of dietary intake and weight restoration efforts is crucial.

Coding Guidelines

Inclusion Criteria

Use F50.020 When
  • According to ICD
  • 10 guidelines, F50
  • 020 should be used when the patient meets the criteria for anorexia nervosa, binge eating/purging type, and has a mild severity classification
  • Documentation must support the diagnosis, including evidence of binge eating or purging behaviors and BMI measurements

Exclusion Criteria

Do NOT use F50.020 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

90834CPT Code

Psychotherapy, 45 minutes with patient

Clinical Scenario

Used during therapy sessions for patients diagnosed with F50.020.

Documentation Requirements

Progress notes must detail the patient's mental state and treatment response.

Specialty Considerations

Psychiatrists should document any co-occurring disorders.

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. F50.020 provides a clear classification for mild cases, which aids in appropriate treatment planning.

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. F50.020 provides a clear classification for mild cases, which aids in appropriate treatment planning.

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. F50.020 provides a clear classification for mild cases, which aids in appropriate treatment planning.

Resources

Clinical References

  • •
    National Eating Disorders Association

Coding & Billing References

  • •
    National Eating Disorders Association

Frequently Asked Questions

What is the significance of the 'mild' classification in F50.020?

The 'mild' classification indicates that the individual has a BMI of 17 or greater but less than 18.5, which helps in determining the severity of the disorder and the appropriate level of care needed.