ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesM87.077

M87.077

Billable

Idiopathic aseptic necrosis of right toe(s)

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

Code Description

ICD-10 M87.077 is a billable code used to indicate a diagnosis of idiopathic aseptic necrosis of right toe(s).

Key Diagnostic Point:

Idiopathic aseptic necrosis of the right toe(s) is a condition characterized by the death of bone tissue due to a lack of blood supply, without the presence of infection. This condition can occur in various bones but is particularly noted in the toes. The etiology remains unknown, hence the term 'idiopathic.' Patients may present with localized pain, swelling, and limited mobility in the affected toe(s). Diagnosis typically involves imaging studies such as X-rays or MRI, which can reveal changes in bone density and structure indicative of necrosis. The condition may lead to complications such as osteoarthritis or deformities if not managed appropriately. Treatment options may include conservative measures like rest, immobilization, and pain management, or surgical interventions in more 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

  • Lack of clear etiology complicates diagnosis.
  • Differentiation from other forms of osteonecrosis is required.
  • Potential for misclassification with osteomyelitis.
  • Documentation must specify 'idiopathic' to avoid confusion.

Audit Risk Factors

  • Inadequate documentation of symptoms.
  • Failure to specify 'idiopathic' in the diagnosis.
  • Misuse of codes related to osteomyelitis.
  • Lack of imaging documentation to support diagnosis.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

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

Common Clinical Scenarios

Patients presenting with toe pain, swelling, and limited mobility; post-surgical follow-ups.

Billing Considerations

Ensure clear documentation of the idiopathic nature of the condition to avoid misclassification.

Radiology

Documentation Requirements

Comprehensive imaging reports detailing findings consistent with osteonecrosis.

Common Clinical Scenarios

Imaging studies requested for suspected osteonecrosis; follow-up imaging to assess treatment efficacy.

Billing Considerations

Radiologists should clearly indicate the absence of infection in their reports.

Coding Guidelines

Inclusion Criteria

Use M87.077 When
  • According to ICD
  • 10 guidelines, M87
  • 077 should be used when the necrosis is confirmed to be idiopathic and not due to other causes such as trauma or infection
  • Documentation must support the diagnosis with clinical findings and imaging results

Exclusion Criteria

Do NOT use M87.077 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 cases of necrosis-related joint pain.

Documentation Requirements

Document the reason for the procedure, including the diagnosis and treatment plan.

Specialty Considerations

Orthopedic specialists should ensure clear linkage between the procedure and the diagnosis.

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 facilitating better patient management.

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 facilitating better patient management.

Reimbursement & Billing Impact

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

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 it is believed to be related to reduced blood flow to the bone, which can occur due to various factors including trauma, systemic diseases, or certain medications.