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ICD-10 Guide
ICD-10 CodesM87.078

M87.078

Billable

Idiopathic aseptic necrosis of left toe(s)

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

Code Description

ICD-10 M87.078 is a billable code used to indicate a diagnosis of idiopathic aseptic necrosis of left toe(s).

Key Diagnostic Point:

Idiopathic aseptic necrosis of the left 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 is often seen in the small bones of the feet, particularly the toes, and can lead to significant pain, swelling, and functional impairment. The etiology remains unknown, hence the term 'idiopathic.' Patients may present with localized tenderness, difficulty in ambulation, and may experience joint stiffness. 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 rest, analgesics, and physical therapy, or more invasive procedures such as surgical intervention in severe cases. The absence of infection differentiates this condition from osteomyelitis, which is an infection of the bone that requires different management strategies. Understanding the nuances of this condition is crucial for accurate coding and appropriate patient management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from osteomyelitis and other bone conditions
  • Need for precise documentation of idiopathic nature
  • Variability in clinical presentation and imaging findings
  • Potential for co-morbid conditions affecting the toes

Audit Risk Factors

  • Inadequate documentation of the idiopathic nature
  • Failure to differentiate from osteomyelitis
  • Lack of imaging reports to support diagnosis
  • Inconsistent clinical notes regarding symptoms

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 toe pain, swelling, and limited mobility; cases following trauma or with underlying vascular issues.

Billing Considerations

Ensure clear documentation of the absence of infection and the idiopathic nature of the necrosis.

Podiatry

Documentation Requirements

Comprehensive foot examinations, including vascular assessments and imaging studies.

Common Clinical Scenarios

Patients with chronic foot pain, particularly in the toes, often with a history of previous foot injuries.

Billing Considerations

Focus on the functional impact of the condition on ambulation and daily activities.

Coding Guidelines

Inclusion Criteria

Use M87.078 When
  • Follow the official ICD
  • CM coding guidelines, ensuring to document the idiopathic nature and absence of infection
  • Include relevant imaging and clinical findings to support the diagnosis

Exclusion Criteria

Do NOT use M87.078 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 when joint aspiration is performed to relieve pain or assess joint fluid.

Documentation Requirements

Document the reason for aspiration, findings, and any therapeutic interventions.

Specialty Considerations

Orthopedic specialists may perform this procedure for diagnostic or therapeutic purposes.

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 the accuracy of patient records and facilitating better treatment planning.

ICD-9 vs ICD-10

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

Reimbursement & Billing Impact

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

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 is unknown, but it is believed to be related to reduced blood supply to the bone, which can occur due to various factors including trauma, vascular issues, or systemic diseases.