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ICD-10 Guide
ICD-10 CodesM87.075

M87.075

Billable

Idiopathic aseptic necrosis of left foot

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

Code Description

ICD-10 M87.075 is a billable code used to indicate a diagnosis of idiopathic aseptic necrosis of left foot.

Key Diagnostic Point:

Idiopathic aseptic necrosis of the left foot 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 lead to significant pain, swelling, and functional impairment of the affected foot. The etiology remains unknown, hence the term 'idiopathic.' Aseptic necrosis can occur in various bones, but when localized to the foot, it often affects the talus or the metatarsals. Patients may present with gradual onset of pain, which can worsen with weight-bearing activities. 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 and analgesics, physical therapy, or surgical interventions such as core decompression or osteotomy in more severe cases. The condition can lead to complications such as osteoarthritis or chronic pain if not managed appropriately.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating from other types of necrosis or osteomyelitis
  • Understanding the idiopathic nature and ruling out secondary causes
  • Documentation of imaging findings and clinical symptoms
  • Potential for co-morbid conditions affecting treatment and coding

Audit Risk Factors

  • Inadequate documentation of symptoms and imaging results
  • Misclassification with osteomyelitis or other bone conditions
  • Failure to document treatment plans and follow-up care
  • Inconsistent coding across multiple encounters

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed imaging reports, clinical notes on pain assessment, and treatment plans.

Common Clinical Scenarios

Patients presenting with foot pain, history of trauma, or chronic conditions affecting blood supply.

Billing Considerations

Ensure clear documentation of the idiopathic nature and exclusion of other causes.

Physical Medicine and Rehabilitation

Documentation Requirements

Functional assessments, therapy progress notes, and patient-reported outcomes.

Common Clinical Scenarios

Rehabilitation following surgical intervention for necrosis or conservative management.

Billing Considerations

Documenting the impact on daily activities and rehabilitation goals.

Coding Guidelines

Inclusion Criteria

Use M87.075 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • related necrosis

Exclusion Criteria

Do NOT use M87.075 When
  • Exclude conditions that may mimic or complicate the diagnosis, such as infections or trauma

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 necrosis-related joint issues.

Documentation Requirements

Document the indication for the procedure and any imaging findings.

Specialty Considerations

Orthopedic specialists may perform this procedure for symptomatic relief.

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 M87.075, improving the accuracy of patient records and facilitating better tracking of treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like M87.075, improving the accuracy of patient records and facilitating better tracking of treatment outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like M87.075, improving the accuracy of patient records and facilitating better tracking of treatment outcomes.

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 be influenced by factors such as trauma, corticosteroid use, or systemic diseases.