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ICD-10 Guide
ICD-10 CodesM87.072

M87.072

Billable

Idiopathic aseptic necrosis of left ankle

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

Code Description

ICD-10 M87.072 is a billable code used to indicate a diagnosis of idiopathic aseptic necrosis of left ankle.

Key Diagnostic Point:

Idiopathic aseptic necrosis of the left ankle is a condition characterized by the death of bone tissue due to a lack of blood supply, without the presence of infection. This condition often affects the subchondral bone, which is the layer of bone just below the cartilage of a joint. The etiology remains unknown, hence the term 'idiopathic.' Patients may present with pain, swelling, and limited range of motion in the affected ankle. Diagnosis typically involves imaging studies such as X-rays or MRI, which can reveal changes in bone density and structure. The condition can lead to significant orthopedic complications, including joint dysfunction and the potential for osteoarthritis if not managed appropriately. Treatment options may include conservative measures such as rest, physical therapy, and anti-inflammatory medications, or more invasive procedures like core decompression or joint replacement in severe 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

  • Idiopathic nature complicates diagnosis and documentation.
  • Differentiation from other forms of osteonecrosis is necessary.
  • Requires thorough imaging documentation.
  • Potential for co-morbid conditions affecting the ankle.

Audit Risk Factors

  • Inadequate documentation of idiopathic nature.
  • Failure to document imaging results.
  • Lack of detailed treatment plans.
  • Misclassification with other osteonecrosis codes.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed imaging reports, treatment plans, and follow-up notes.

Common Clinical Scenarios

Patients presenting with ankle pain and limited mobility, requiring imaging and potential surgical intervention.

Billing Considerations

Ensure clear documentation of the idiopathic nature and exclusion of other causes.

Radiology

Documentation Requirements

Comprehensive imaging reports detailing findings related to necrosis.

Common Clinical Scenarios

Imaging studies performed for suspected osteonecrosis.

Billing Considerations

Accurate interpretation of imaging to support diagnosis.

Coding Guidelines

Inclusion Criteria

Use M87.072 When
  • Follow official ICD
  • CM guidelines for coding osteonecrosis

Exclusion Criteria

Do NOT use M87.072 When
  • Ensure documentation supports the diagnosis of idiopathic aseptic necrosis and excludes other conditions such as osteomyelitis or traumatic injury

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 necrosis.

Documentation Requirements

Document indication for procedure and findings.

Specialty Considerations

Orthopedic specialists often perform this procedure.

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 data accuracy and treatment tracking.

ICD-9 vs ICD-10

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

Reimbursement & Billing Impact

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

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 factors such as corticosteroid use, alcohol consumption, and certain medical conditions may contribute.