ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesF50.00

F50.00

Billable

Anorexia nervosa, unspecified

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

Code Description

ICD-10 F50.00 is a billable code used to indicate a diagnosis of anorexia nervosa, unspecified.

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. Individuals with anorexia often engage in restrictive eating behaviors, may exercise excessively, and may use other methods to lose weight, such as purging or the misuse of laxatives. The unspecified designation indicates that the specific type of anorexia nervosa (e.g., restricting type or binge-eating/purging type) has not been specified. This condition can lead to severe physical health complications, including electrolyte imbalances, cardiovascular issues, and gastrointestinal problems, as well as psychological effects such as anxiety and depression. Diagnosis typically involves a comprehensive assessment of eating habits, weight history, and psychological evaluation. Treatment often requires a multidisciplinary approach, including nutritional rehabilitation, psychotherapy, and medical monitoring.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of symptoms
  • Need for comprehensive documentation of eating behaviors
  • Potential overlap with other eating disorders
  • Psychiatric evaluation requirements

Audit Risk Factors

  • Inadequate documentation of weight history
  • Failure to specify the type of anorexia when applicable
  • Lack of evidence for medical necessity of treatment
  • Insufficient psychiatric evaluation documentation

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Detailed psychiatric evaluations, treatment plans, and progress notes.

Common Clinical Scenarios

Initial assessment of a patient presenting with severe weight loss and psychological distress.

Billing Considerations

Ensure that all psychological assessments and treatment modalities are well-documented to support the diagnosis.

Nutrition

Documentation Requirements

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

Common Clinical Scenarios

Developing a nutritional rehabilitation plan for a patient with anorexia nervosa.

Billing Considerations

Documenting the patient's dietary intake and any changes in weight or health status is crucial.

Coding Guidelines

Inclusion Criteria

Use F50.00 When
  • According to ICD
  • 10 coding guidelines, F50
  • 00 should be used when the specific type of anorexia nervosa is not documented
  • Coders should ensure that the diagnosis is supported by clinical documentation, including weight history and psychological assessments

Exclusion Criteria

Do NOT use F50.00 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

90834CPT Code

Psychotherapy, 45 minutes with patient

Clinical Scenario

Used for ongoing therapy sessions with patients diagnosed with anorexia nervosa.

Documentation Requirements

Progress notes detailing the patient's mental state, treatment goals, and any changes in behavior.

Specialty Considerations

Psychiatrists should document the rationale for therapy frequency and any adjustments to treatment plans.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of eating disorders, which can improve the accuracy of treatment tracking and reimbursement. However, the unspecified code F50.00 may lead to challenges in capturing the full clinical picture.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of eating disorders, which can improve the accuracy of treatment tracking and reimbursement. However, the unspecified code F50.00 may lead to challenges in capturing the full clinical picture.

Reimbursement & Billing Impact

reimbursement. However, the unspecified code F50.00 may lead to challenges in capturing the full clinical picture.

Resources

Clinical References

  • •
    National Eating Disorders Association

Coding & Billing References

  • •
    National Eating Disorders Association

Frequently Asked Questions

What is the difference between anorexia nervosa and bulimia nervosa?

Anorexia nervosa is characterized by extreme weight loss and restrictive eating behaviors, while bulimia nervosa involves episodes of binge eating followed by purging behaviors. Both are serious eating disorders but have different diagnostic criteria and treatment approaches.