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v1.0.0
ICD-10 Guide
ICD-10 CodesR63.0

R63.0

Anorexia

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 R63.0 is a billable code used to indicate a diagnosis of anorexia.

Key Diagnostic Point:

Anorexia, as classified under ICD-10 code R63.0, refers to a significant loss of appetite or desire to eat, which can lead to weight loss and nutritional deficiencies. This symptom can arise from various underlying conditions, including psychological disorders such as anorexia nervosa, gastrointestinal diseases, infections, and chronic illnesses. Clinically, anorexia may present with signs such as weight loss, fatigue, and malnutrition. Laboratory findings may reveal electrolyte imbalances, anemia, or deficiencies in vitamins and minerals. The condition can be acute or chronic and may require a multidisciplinary approach for management, including dietary interventions, psychological support, and treatment of underlying causes. Accurate documentation of the patient's history, associated symptoms, and any relevant lab results is crucial for proper coding and management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying causes that can lead to anorexia.
  • Need for comprehensive patient history to determine the cause.
  • Potential overlap with other codes related to appetite and weight loss.
  • Documentation must clearly differentiate between anorexia and other eating disorders.

Audit Risk Factors

  • Insufficient documentation of the underlying cause of anorexia.
  • Failure to differentiate between anorexia and other eating disorders.
  • Inconsistent coding practices across different specialties.
  • Lack of supporting lab results or clinical findings.

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed patient history, including duration and severity of anorexia, associated symptoms, and any relevant lab results.

Common Clinical Scenarios

Patients presenting with unexplained weight loss, fatigue, or malnutrition.

Billing Considerations

Consideration of chronic illnesses that may contribute to anorexia, such as cancer or chronic infections.

Emergency Medicine

Documentation Requirements

Acute care documentation including vital signs, immediate lab results, and any interventions performed.

Common Clinical Scenarios

Patients presenting with severe dehydration or electrolyte imbalances due to acute anorexia.

Billing Considerations

Rapid assessment of potential life-threatening conditions that may cause anorexia.

Coding Guidelines

Inclusion Criteria

Use R63.0 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that the code is used only when anorexia is a significant factor in the patient's clinical picture
  • Document the underlying cause when known, and ensure that all relevant symptoms and findings are recorded

Exclusion Criteria

Do NOT use R63.0 When
No specific exclusions found.

Related CPT Codes

99213CPT Code

Established patient office visit, Level 3

Clinical Scenario

Used when a patient presents with anorexia for evaluation and management.

Documentation Requirements

Document the patient's history, physical examination findings, and any treatment plans.

Specialty Considerations

Internal medicine may require more detailed documentation of chronic conditions contributing to anorexia.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of anorexia, enabling better tracking of the condition and its underlying causes. This specificity can improve patient care and outcomes by facilitating targeted interventions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of anorexia, enabling better tracking of the condition and its underlying causes. This specificity can improve patient care and outcomes by facilitating targeted interventions.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of anorexia, enabling better tracking of the condition and its underlying causes. This specificity can improve patient care and outcomes by facilitating targeted interventions.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the difference between anorexia and anorexia nervosa?

Anorexia is a symptom characterized by loss of appetite, while anorexia nervosa is a specific eating disorder with psychological components. Anorexia nervosa is coded separately under F50.0.