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ICD-10 Guide
ICD-10 CodesM87.035

M87.035

Billable

Idiopathic aseptic necrosis of left ulna

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

Code Description

ICD-10 M87.035 is a billable code used to indicate a diagnosis of idiopathic aseptic necrosis of left ulna.

Key Diagnostic Point:

Idiopathic aseptic necrosis of the left ulna is a condition characterized by the death of bone tissue due to a lack of blood supply, specifically affecting the ulna bone in the forearm. This condition is termed 'idiopathic' because the exact cause is unknown, although it may be associated with factors such as trauma, corticosteroid use, or excessive alcohol consumption. Patients typically present with pain, swelling, and limited range of motion in the affected arm. Diagnosis is often confirmed through imaging studies such as X-rays or MRI, which reveal changes in bone density and structure. Treatment options may include conservative management with pain relief and physical therapy, or surgical interventions such as bone grafting or joint replacement in severe cases. The condition can lead to significant orthopedic complications, including joint dysfunction and chronic pain, necessitating careful monitoring and management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Idiopathic nature complicates the identification of underlying causes.
  • Differentiation from other forms of osteonecrosis is required.
  • Potential for co-morbid conditions affecting treatment and coding.
  • Documentation must clearly specify the location and nature of necrosis.

Audit Risk Factors

  • Insufficient documentation of the idiopathic nature of the condition.
  • Failure to document associated symptoms or complications.
  • Inadequate imaging reports to support the diagnosis.
  • Misclassification of the condition as traumatic or infectious.

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 unexplained forearm pain, limited mobility, or after trauma.

Billing Considerations

Ensure clear documentation of the idiopathic nature and any potential risk factors.

Radiology

Documentation Requirements

Comprehensive imaging reports detailing findings consistent with osteonecrosis.

Common Clinical Scenarios

Imaging studies requested for patients with suspected bone necrosis.

Billing Considerations

Radiologists should correlate imaging findings with clinical symptoms for accurate diagnosis.

Coding Guidelines

Inclusion Criteria

Use M87.035 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the condition's idiopathic nature
  • Include any relevant history or risk factors that may contribute to the diagnosis

Exclusion Criteria

Do NOT use M87.035 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 proper coding for joint injections.

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 enhancing the ability to track treatment outcomes.

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 enhancing the ability to track treatment outcomes.

Reimbursement & Billing Impact

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

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 symptoms of idiopathic aseptic necrosis?

Common symptoms include localized pain, swelling, and reduced range of motion in the affected area, often worsening with activity.