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ICD-10 Guide
ICD-10 CodesM87.052

M87.052

Billable

Idiopathic aseptic necrosis of left femur

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

Code Description

ICD-10 M87.052 is a billable code used to indicate a diagnosis of idiopathic aseptic necrosis of left femur.

Key Diagnostic Point:

Idiopathic aseptic necrosis of the left femur is a condition characterized by the death of bone tissue due to a lack of blood supply, specifically affecting the femur. This condition is termed 'idiopathic' because the exact cause is unknown, although it is often associated with risk factors such as corticosteroid use, alcohol consumption, and certain medical conditions like sickle cell disease or lupus. The necrosis leads to bone collapse and joint dysfunction, often resulting in pain, limited mobility, and potential long-term complications such as osteoarthritis. Diagnosis typically involves imaging studies such as MRI or X-rays, which reveal changes in the bone structure. Treatment options may include conservative management with pain relief and physical therapy, or surgical interventions such as core decompression or total hip replacement in advanced cases. Understanding the nuances of this condition is crucial for accurate coding and appropriate management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and severity of symptoms
  • Need for precise documentation of idiopathic nature versus secondary causes
  • Differentiation from other forms of osteonecrosis and osteomyelitis
  • Potential for co-existing conditions that may complicate coding

Audit Risk Factors

  • Inadequate documentation of the idiopathic nature of the condition
  • Failure to specify laterality (left vs. right)
  • Misclassification with osteomyelitis or other bone infections
  • Lack of imaging documentation 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 hip pain, limited range of motion, and imaging findings suggestive of necrosis.

Billing Considerations

Ensure clear documentation of the idiopathic nature and any risk factors that may contribute to the condition.

Radiology

Documentation Requirements

Comprehensive imaging reports detailing findings consistent with osteonecrosis.

Common Clinical Scenarios

Imaging studies performed for patients with unexplained hip pain.

Billing Considerations

Radiologists should provide clear descriptions of findings to support the diagnosis of idiopathic necrosis.

Coding Guidelines

Inclusion Criteria

Use M87.052 When
  • According to ICD
  • 10 coding guidelines, M87
  • 052 should be used when the diagnosis of idiopathic aseptic necrosis is confirmed through clinical evaluation and imaging
  • It is important to document the absence of other underlying causes of necrosis

Exclusion Criteria

Do NOT use M87.052 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

27130CPT Code

Total hip arthroplasty

Clinical Scenario

Performed in cases of severe osteonecrosis when conservative treatment fails.

Documentation Requirements

Operative reports detailing the procedure and indication for surgery.

Specialty Considerations

Orthopedic surgeons should document the severity of the condition and previous treatments attempted.

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 idiopathic aseptic necrosis, improving the accuracy of data collection and reimbursement processes. This specificity aids in better tracking of treatment outcomes and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like idiopathic aseptic necrosis, improving the accuracy of data collection and reimbursement processes. This specificity aids in better tracking of treatment outcomes and resource allocation.

Reimbursement & Billing Impact

reimbursement processes. This specificity aids in better tracking of treatment outcomes and resource allocation.

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 treatments for idiopathic aseptic necrosis?

Common treatments include conservative management with pain relief and physical therapy, as well as surgical options like core decompression or total hip replacement, depending on the severity of the condition.