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ICD-10 Guide
ICD-10 CodesM87.064

M87.064

Billable

Idiopathic aseptic necrosis of right fibula

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/17/2025

Code Description

ICD-10 M87.064 is a billable code used to indicate a diagnosis of idiopathic aseptic necrosis of right fibula.

Key Diagnostic Point:

Idiopathic aseptic necrosis of the right fibula is a condition characterized by the death of bone tissue due to a lack of blood supply, specifically affecting the fibula. This condition is termed 'idiopathic' because the exact cause remains unknown, although it may be associated with factors such as trauma, corticosteroid use, or excessive alcohol consumption. The necrosis leads to bone weakening and potential collapse, resulting in pain, swelling, and limited mobility. Patients may present with localized tenderness and may experience difficulty bearing weight on the affected leg. Diagnosis typically involves imaging studies such as X-rays or MRI, which can reveal changes in bone density and structure. Treatment options may include conservative management with rest and analgesics, physical therapy, or surgical interventions such as bone grafting or joint replacement in severe cases. Understanding the implications of this condition is crucial for effective management and coding, as it can lead to significant orthopedic complications if not addressed appropriately.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Lack of clear etiology complicates documentation.
  • Differentiation from other types of osteonecrosis is necessary.
  • Potential for co-morbid conditions affecting coding.
  • Variability in treatment approaches may affect coding specificity.

Audit Risk Factors

  • Inadequate documentation of symptoms and treatment.
  • Failure to specify the laterality of the condition.
  • Misclassification with other types of bone necrosis.
  • Insufficient imaging reports to support diagnosis.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed clinical notes including history, physical examination findings, imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with leg pain, difficulty walking, or previous trauma to the fibula.

Billing Considerations

Ensure accurate documentation of the idiopathic nature and any associated risk factors.

Radiology

Documentation Requirements

Comprehensive imaging reports detailing findings related to necrosis and any differential diagnoses.

Common Clinical Scenarios

Imaging studies performed for patients with suspected osteonecrosis.

Billing Considerations

Clear communication of findings to support orthopedic diagnosis and treatment.

Coding Guidelines

Inclusion Criteria

Use M87.064 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that the diagnosis is supported by clinical documentation and imaging results
  • Include laterality and specify if the condition is acute or chronic

Exclusion Criteria

Do NOT use M87.064 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

20610CPT Code

Arthrocentesis, aspiration and/or injection into a major joint or bursa

Clinical Scenario

Used for pain management in patients with osteonecrosis.

Documentation Requirements

Document the indication for the procedure and any imaging findings.

Specialty Considerations

Orthopedic specialists should ensure that the procedure is linked to 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 conditions like M87.064, improving the accuracy of patient records and facilitating better treatment planning.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like M87.064, improving the accuracy of patient records and facilitating better treatment planning.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like M87.064, improving the accuracy of patient records and facilitating better treatment planning.

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 primary cause of idiopathic aseptic necrosis?

The primary cause remains unknown, but it may be associated with factors such as trauma, corticosteroid use, or excessive alcohol consumption.