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v1.0.0
ICD-10 Guide
ICD-10 CodesM84.75

M84.75

Billable

Atypical femoral fracture

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

Code Description

ICD-10 M84.75 is a billable code used to indicate a diagnosis of atypical femoral fracture.

Key Diagnostic Point:

An atypical femoral fracture is a specific type of fracture that occurs in the femur, typically associated with low-energy trauma or no trauma at all. These fractures are often linked to long-term use of bisphosphonates, medications commonly prescribed for osteoporosis and other bone density disorders. Clinically, atypical femoral fractures are characterized by specific radiographic features, including a transverse or short oblique fracture pattern, located in the subtrochanteric region or diaphysis of the femur. Patients may present with thigh or groin pain prior to the fracture, which can be a warning sign. The underlying pathophysiology involves alterations in bone metabolism, leading to decreased bone quality and strength, making the bone more susceptible to fractures. Diagnosis is typically confirmed through imaging studies, and management may involve surgical intervention, particularly if the fracture is displaced. Understanding the risk factors, including prolonged bisphosphonate therapy, is crucial for prevention and management of these fractures.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of specific fracture types and their associations with medications.
  • Documentation must clearly indicate the atypical nature of the fracture.
  • Differentiation from other types of femoral fractures is necessary.
  • Knowledge of patient history regarding osteoporosis treatment is essential.

Audit Risk Factors

  • Inadequate documentation of the atypical nature of the fracture.
  • Failure to document prior history of bisphosphonate use.
  • Misclassification of fracture type.
  • Lack of imaging reports to support the diagnosis.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed imaging reports, surgical notes, and patient history regarding osteoporosis treatment.

Common Clinical Scenarios

Patients presenting with thigh pain and a history of bisphosphonate use, or those with recent low-energy femoral fractures.

Billing Considerations

Ensure that the fracture is documented as atypical and that all relevant imaging is included.

Endocrinology

Documentation Requirements

Comprehensive patient history regarding bone density disorders and medication use.

Common Clinical Scenarios

Patients with osteoporosis being treated with bisphosphonates who present with fractures.

Billing Considerations

Documentation should include details on bone density tests and treatment history.

Coding Guidelines

Inclusion Criteria

Use M84.75 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the atypical nature of the fracture
  • Include any relevant history of osteoporosis treatment and imaging findings

Exclusion Criteria

Do NOT use M84.75 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

27447CPT Code

Open treatment of femoral fracture

Clinical Scenario

Used when surgical intervention is required for atypical femoral fractures.

Documentation Requirements

Operative reports detailing the fracture type and surgical approach.

Specialty Considerations

Orthopedic documentation must clearly indicate the atypical nature of the fracture.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of atypical femoral fractures, improving the accuracy of data collection and reimbursement processes. It emphasizes the importance of detailed documentation regarding the patient's treatment history and fracture characteristics.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of atypical femoral fractures, improving the accuracy of data collection and reimbursement processes. It emphasizes the importance of detailed documentation regarding the patient's treatment history and fracture characteristics.

Reimbursement & Billing Impact

reimbursement processes. It emphasizes the importance of detailed documentation regarding the patient's treatment history and fracture characteristics.

Resources

Clinical References

  • •
    American Academy of Orthopaedic Surgeons (AAOS)

Coding & Billing References

  • •
    American Academy of Orthopaedic Surgeons (AAOS)

Frequently Asked Questions

What is an atypical femoral fracture?

An atypical femoral fracture is a specific type of fracture that occurs in the femur, often associated with long-term bisphosphonate therapy for osteoporosis. It typically presents with unique radiographic features and may occur with minimal or no trauma.