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ICD-10 Guide
ICD-10 CodesM87.335

M87.335

Billable

Other secondary osteonecrosis of left ulna

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

Code Description

ICD-10 M87.335 is a billable code used to indicate a diagnosis of other secondary osteonecrosis of left ulna.

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 M87.335, the osteonecrosis specifically affects the left ulna and is classified as secondary, meaning it is a result of other underlying conditions or factors. Common causes of secondary osteonecrosis include prolonged corticosteroid use, excessive alcohol consumption, trauma, and certain medical conditions such as sickle cell disease or systemic lupus erythematosus. Clinically, patients may present with pain, swelling, and limited range of motion in the affected area. Diagnosis typically involves imaging studies such as X-rays or MRI, which can reveal changes in bone density and structure. Treatment options may include conservative management with pain relief, physical therapy, or surgical interventions such as core decompression or joint replacement, depending on the severity of the condition. Accurate coding of M87.335 is crucial for proper reimbursement and tracking of osteonecrosis cases, as it reflects the complexity of the patient's condition and the need for specialized care.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between primary and secondary osteonecrosis.
  • Identifying the underlying causes contributing to the condition.
  • Understanding the specific anatomical site affected (left ulna).
  • Documenting the severity and stage of osteonecrosis.

Audit Risk Factors

  • Inadequate documentation of the underlying cause of osteonecrosis.
  • Failure to specify the affected limb accurately.
  • Lack of imaging studies to support the diagnosis.
  • Misclassification of osteonecrosis as osteomyelitis.

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 joint pain, history of corticosteroid use, or trauma.

Billing Considerations

Ensure that the documentation clearly states the diagnosis and any relevant co-morbidities.

Rheumatology

Documentation Requirements

Comprehensive assessment of systemic conditions that may contribute to osteonecrosis.

Common Clinical Scenarios

Patients with autoimmune diseases or hematological disorders presenting with bone pain.

Billing Considerations

Document the relationship between the systemic condition and the development of osteonecrosis.

Coding Guidelines

Inclusion Criteria

Use M87.335 When
  • According to ICD
  • 10 guidelines, M87
  • 335 should be used when osteonecrosis is confirmed and is secondary to another condition
  • Documentation must support the diagnosis and specify the affected limb

Exclusion Criteria

Do NOT use M87.335 When
  • Exclusion criteria include primary osteonecrosis and osteomyelitis

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 osteonecrosis cases.

Documentation Requirements

Document the indication for the procedure and the joint involved.

Specialty Considerations

Orthopedic specialists should ensure clear documentation of the patient's condition.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of osteonecrosis, improving the ability to track and manage this condition. M87.335 provides a clear indication of the affected limb and the secondary nature of the condition, which is essential for treatment planning and reimbursement.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of osteonecrosis, improving the ability to track and manage this condition. M87.335 provides a clear indication of the affected limb and the secondary nature of the condition, which is essential for treatment planning and reimbursement.

Reimbursement & Billing Impact

reimbursement.

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 any identifiable cause, while secondary osteonecrosis is due to other medical conditions or factors such as trauma, medications, or systemic diseases.