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ICD-10 Guide
ICD-10 CodesM87.321

M87.321

Billable

Other secondary osteonecrosis, right humerus

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

Code Description

ICD-10 M87.321 is a billable code used to indicate a diagnosis of other secondary osteonecrosis, right humerus.

Key Diagnostic Point:

M87.321 refers to a specific type of osteonecrosis affecting the right humerus, categorized as secondary osteonecrosis. This condition occurs when there is a disruption in the blood supply to the bone, leading to bone cell death. Secondary osteonecrosis can arise from various factors, including trauma, corticosteroid use, excessive alcohol consumption, or underlying medical conditions such as sickle cell disease or systemic lupus erythematosus. Clinically, patients may present with pain in the shoulder region, limited range of motion, and potential joint dysfunction. Diagnosis typically involves imaging studies such as X-rays or MRI, which can reveal characteristic changes in the bone structure. Treatment options may include conservative management with pain relief and physical therapy, or more invasive procedures such as core decompression or joint replacement, depending on the severity of the condition. Understanding the underlying cause of the osteonecrosis is crucial for effective management and prevention of further complications.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between primary and secondary osteonecrosis
  • Identifying the specific location of osteonecrosis (right humerus)
  • Understanding the underlying causes contributing to the condition
  • Navigating the documentation requirements for associated conditions

Audit Risk Factors

  • Inadequate documentation of the underlying cause of osteonecrosis
  • Failure to specify the affected bone accurately
  • Misclassification of primary versus secondary osteonecrosis
  • Lack of supporting imaging studies in the medical record

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 shoulder pain, limited mobility, or history of corticosteroid use.

Billing Considerations

Orthopedic surgeons must document the specific location and extent of osteonecrosis to ensure accurate coding.

Rheumatology

Documentation Requirements

Comprehensive assessment of underlying systemic conditions contributing to osteonecrosis.

Common Clinical Scenarios

Patients with autoimmune disorders presenting with joint pain and risk factors for osteonecrosis.

Billing Considerations

Rheumatologists should document any relevant laboratory findings and treatment history related to the underlying condition.

Coding Guidelines

Inclusion Criteria

Use M87.321 When
  • According to ICD
  • 10 coding guidelines, M87
  • 321 should be used when osteonecrosis is confirmed to be secondary and specifically affects the right humerus
  • Coders must ensure that the documentation supports the diagnosis and that any underlying conditions are also coded appropriately

Exclusion Criteria

Do NOT use M87.321 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 that the procedure is linked to the diagnosis of osteonecrosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of osteonecrosis, enabling better tracking of the condition and its causes. M87.321 provides a clear distinction between secondary and primary osteonecrosis, which is crucial for treatment and research.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of osteonecrosis, enabling better tracking of the condition and its causes. M87.321 provides a clear distinction between secondary and primary osteonecrosis, which is crucial for treatment and research.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of osteonecrosis, enabling better tracking of the condition and its causes. M87.321 provides a clear distinction between secondary and primary osteonecrosis, which is crucial for treatment and research.

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 secondary osteonecrosis?

Common causes include trauma, corticosteroid use, excessive alcohol consumption, and certain medical conditions such as sickle cell disease and systemic lupus erythematosus.