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ICD-10 Guide
ICD-10 CodesM87.06

M87.06

Billable

Idiopathic aseptic necrosis of tibia and fibula

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

Code Description

ICD-10 M87.06 is a billable code used to indicate a diagnosis of idiopathic aseptic necrosis of tibia and fibula.

Key Diagnostic Point:

Idiopathic aseptic necrosis of the tibia and fibula is a condition characterized by the death of bone tissue due to a lack of blood supply, without the presence of infection. This condition is often seen in younger individuals and can result from various factors, including trauma, corticosteroid use, or excessive alcohol consumption, although in many cases, the exact cause remains unknown. The necrosis leads to bone collapse, pain, and functional impairment, particularly in weight-bearing activities. Patients may present with localized pain, swelling, and limited range of motion in the affected limb. Diagnosis typically involves imaging studies such as X-rays, MRI, or CT scans to assess the extent of bone damage. Treatment options may include conservative management with pain relief and physical therapy, or surgical interventions such as core decompression or bone grafting in more severe cases. Early diagnosis and intervention are crucial to prevent further complications and improve outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between idiopathic and secondary causes of osteonecrosis.
  • Need for comprehensive imaging documentation to support diagnosis.
  • Potential overlap with other bone conditions such as osteomyelitis.
  • Variability in clinical presentation and treatment options.

Audit Risk Factors

  • Inadequate documentation of the idiopathic nature of the condition.
  • Failure to document imaging studies that confirm diagnosis.
  • Misclassification with osteomyelitis or other bone infections.
  • Lack of detailed patient history regarding risk factors.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed imaging reports, surgical notes, and patient history.

Common Clinical Scenarios

Patients presenting with chronic pain in the lower leg, especially after trauma or corticosteroid use.

Billing Considerations

Ensure clear documentation of the absence of infection and the idiopathic nature of the necrosis.

Radiology

Documentation Requirements

Comprehensive imaging studies with clear interpretations.

Common Clinical Scenarios

Imaging for suspected osteonecrosis in patients with risk factors.

Billing Considerations

Accurate reporting of findings to support the diagnosis of M87.06.

Coding Guidelines

Inclusion Criteria

Use M87.06 When
  • According to ICD
  • 10 guidelines, M87
  • 06 should be used when the necrosis is confirmed to be idiopathic and not due to other underlying conditions
  • Documentation must support the diagnosis, including imaging results and patient history

Exclusion Criteria

Do NOT use M87.06 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 the patient's response.

Specialty Considerations

Orthopedic specialists should ensure clear documentation of the diagnosis and treatment plan.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of osteonecrosis, improving the accuracy of data collection and reimbursement processes. M87.06 provides a clear distinction for idiopathic cases, which aids in clinical research and treatment planning.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of osteonecrosis, improving the accuracy of data collection and reimbursement processes. M87.06 provides a clear distinction for idiopathic cases, which aids in clinical research and treatment planning.

Reimbursement & Billing Impact

reimbursement processes. M87.06 provides a clear distinction for idiopathic cases, which aids in clinical research and 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 are the common causes of idiopathic aseptic necrosis?

Common causes include trauma, corticosteroid use, excessive alcohol consumption, and certain medical conditions, although many cases remain idiopathic with no identifiable cause.