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ICD-10 Guide
ICD-10 CodesM87.329

M87.329

Billable

Other secondary osteonecrosis, unspecified humerus

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

Code Description

ICD-10 M87.329 is a billable code used to indicate a diagnosis of other secondary osteonecrosis, unspecified humerus.

Key Diagnostic Point:

Osteonecrosis, also known as avascular necrosis, is a condition characterized by the death of bone tissue due to a lack of blood supply. In the case of M87.329, the osteonecrosis is secondary, meaning it arises as a complication of another underlying condition or factor, such as corticosteroid use, trauma, or systemic diseases like lupus or sickle cell disease. The unspecified humerus indicates that the specific location of the osteonecrosis within the humerus is not detailed. Patients may present with joint pain, limited range of motion, and potential joint collapse if the condition progresses. Diagnosis typically involves imaging studies such as MRI or X-rays, which can reveal changes in bone density and structure. Treatment options may include conservative management, such as physical therapy and pain management, or surgical interventions like core decompression or joint replacement, depending on the severity of the condition. Accurate coding is essential for proper treatment reimbursement and tracking of patient outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of secondary causes of osteonecrosis.
  • Differentiation from primary osteonecrosis codes.
  • Need for precise documentation of underlying conditions.
  • Potential for misclassification with similar codes.

Audit Risk Factors

  • Inadequate documentation of underlying conditions.
  • Failure to specify the location of osteonecrosis.
  • Misuse of related codes leading to incorrect billing.
  • Lack of imaging documentation to support diagnosis.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

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

Common Clinical Scenarios

Patients with a history of corticosteroid use presenting with shoulder pain.

Billing Considerations

Ensure that all underlying conditions contributing to osteonecrosis are documented.

Rheumatology

Documentation Requirements

Comprehensive assessment of systemic diseases that may lead to osteonecrosis.

Common Clinical Scenarios

Patients with autoimmune disorders presenting with joint pain.

Billing Considerations

Document the relationship between systemic conditions and osteonecrosis.

Coding Guidelines

Inclusion Criteria

Use M87.329 When
  • According to ICD
  • 10 coding guidelines, M87
  • 329 should be used when the osteonecrosis is secondary and the specific cause is not documented
  • Coders must ensure that the underlying condition is well
  • documented to support the use of this code

Exclusion Criteria

Do NOT use M87.329 When
  • Exclusion criteria include primary osteonecrosis codes and conditions that do not lead to secondary osteonecrosis

Related ICD-10 Codes

Related CPT Codes

23470CPT Code

Arthroscopy, shoulder, surgical

Clinical Scenario

Used when surgical intervention is required for osteonecrosis.

Documentation Requirements

Detailed operative notes and pre-operative imaging.

Specialty Considerations

Orthopedic documentation must clearly outline the necessity for surgery.

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 complications. M87.329 provides a clear designation for secondary osteonecrosis, which aids in treatment planning and reimbursement processes.

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 complications. M87.329 provides a clear designation for secondary osteonecrosis, which aids in treatment planning and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

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 primary and secondary osteonecrosis?

Primary osteonecrosis occurs without an identifiable cause, while secondary osteonecrosis is due to underlying conditions such as trauma, corticosteroid use, or systemic diseases.