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ICD-10 Guide
ICD-10 CodesM87.08

M87.08

Billable

Idiopathic aseptic necrosis of bone, other site

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

Code Description

ICD-10 M87.08 is a billable code used to indicate a diagnosis of idiopathic aseptic necrosis of bone, other site.

Key Diagnostic Point:

Idiopathic aseptic necrosis of bone, also known as osteonecrosis, is a condition characterized by the death of bone tissue due to a lack of blood supply. This condition can occur in various sites of the body, with the hip and knee being the most commonly affected areas. The term 'idiopathic' indicates that the exact cause of the necrosis is unknown, although it may be associated with risk factors such as corticosteroid use, excessive alcohol consumption, trauma, or certain medical conditions like sickle cell disease. Patients may present with joint pain, limited range of motion, and swelling. Diagnosis typically involves imaging studies such as MRI or X-rays, which can reveal changes in bone density and structure. Treatment options vary based on the severity of the condition and may include conservative management, such as physical therapy and pain relief, or surgical interventions like core decompression or joint replacement. Understanding the nuances of this condition is crucial for accurate coding and appropriate patient management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and symptoms across patients
  • Need for precise documentation of the site affected
  • Differentiation from other types of osteonecrosis and bone infections
  • Potential overlap with other codes related to osteomyelitis

Audit Risk Factors

  • Inadequate documentation of the site of necrosis
  • Failure to specify the idiopathic nature of the condition
  • Misclassification with osteomyelitis codes
  • Lack of imaging documentation to support diagnosis

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed clinical notes including patient history, imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with hip or knee pain, particularly those with a history of corticosteroid use or trauma.

Billing Considerations

Ensure that the documentation clearly states the idiopathic nature and the specific site of necrosis.

Radiology

Documentation Requirements

Clear imaging reports that indicate the presence of necrosis and any associated findings.

Common Clinical Scenarios

Imaging studies performed for patients with unexplained joint pain.

Billing Considerations

Radiologists should provide detailed descriptions of findings to support the diagnosis.

Coding Guidelines

Inclusion Criteria

Use M87.08 When
  • According to ICD
  • 10 guidelines, M87
  • 08 should be used when the necrosis is confirmed as idiopathic and not due to other identifiable causes
  • Documentation must support the diagnosis with imaging results and clinical findings

Exclusion Criteria

Do NOT use M87.08 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 joint pain management in patients with M87.08.

Documentation Requirements

Document the reason for the procedure and the joint involved.

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 idiopathic aseptic necrosis, improving the accuracy of patient records and treatment plans.

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 patient records and treatment plans.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like idiopathic aseptic necrosis, improving the accuracy of patient records and treatment plans.

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 osteonecrosis and osteomyelitis?

Osteonecrosis is the death of bone tissue due to lack of blood supply, while osteomyelitis is an infection of the bone. Accurate coding requires distinguishing between these two conditions based on clinical findings and imaging.