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v1.0.0
ICD-10 Guide
ICD-10 CodesM84.4

M84.4

Billable

Pathological fracture, not elsewhere classified

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

Code Description

ICD-10 M84.4 is a billable code used to indicate a diagnosis of pathological fracture, not elsewhere classified.

Key Diagnostic Point:

A pathological fracture is defined as a fracture that occurs in a bone weakened by disease, rather than by trauma. This can occur in conditions such as osteoporosis, where bone density is significantly reduced, leading to increased fragility. Pathological fractures can also arise from other bone metabolism disorders, such as Paget's disease or metastatic cancer, where the structural integrity of the bone is compromised. The term 'not elsewhere classified' indicates that the fracture does not fit into more specific categories of pathological fractures, which may include those due to specific diseases or conditions. Clinically, these fractures can present with pain, swelling, and decreased mobility, and they often require imaging studies for diagnosis. Treatment typically involves stabilization of the fracture, pain management, and addressing the underlying bone density disorder to prevent future fractures. Understanding the underlying causes and appropriate management strategies is crucial for effective treatment and prevention of further complications.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying conditions leading to pathological fractures
  • Need for comprehensive documentation of bone density disorders
  • Differentiation from traumatic fractures
  • Potential for multiple co-existing conditions affecting coding

Audit Risk Factors

  • Inadequate documentation of the underlying bone disorder
  • Failure to specify the location of the fracture
  • Misclassification of traumatic versus pathological fractures
  • Lack of follow-up documentation on treatment and outcomes

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed imaging reports, treatment plans, and follow-up notes are essential for accurate coding.

Common Clinical Scenarios

Patients presenting with fractures after minimal trauma, often in the context of osteoporosis or malignancy.

Billing Considerations

Orthopedic specialists must ensure that the cause of the fracture is well-documented to support the use of M84.4.

Endocrinology

Documentation Requirements

Documentation of bone density tests, metabolic evaluations, and treatment for underlying conditions like osteoporosis.

Common Clinical Scenarios

Patients with osteoporosis or other metabolic bone diseases presenting with fractures.

Billing Considerations

Endocrinologists should provide comprehensive details on the patient's bone health status to justify the use of M84.4.

Coding Guidelines

Inclusion Criteria

Use M84.4 When
  • According to ICD
  • 10 coding guidelines, M84
  • 4 should be used when a pathological fracture is documented without a more specific classification
  • Coders must ensure that the underlying condition contributing to the fracture is also documented to support the diagnosis

Exclusion Criteria

Do NOT use M84.4 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 in conjunction with M84.4 when joint aspiration is performed due to associated pain.

Documentation Requirements

Document the reason for the procedure and the findings during the aspiration.

Specialty Considerations

Orthopedic specialists should ensure that the procedure is justified based on 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 pathological fractures, improving the ability to capture the complexity of these cases. M84.4 provides a broader classification for fractures not specifically categorized, which can help in understanding the epidemiology of fractures related to bone density disorders.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of pathological fractures, improving the ability to capture the complexity of these cases. M84.4 provides a broader classification for fractures not specifically categorized, which can help in understanding the epidemiology of fractures related to bone density disorders.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of pathological fractures, improving the ability to capture the complexity of these cases. M84.4 provides a broader classification for fractures not specifically categorized, which can help in understanding the epidemiology of fractures related to bone density disorders.

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 a pathological fracture and a traumatic fracture?

A pathological fracture occurs in a bone weakened by disease, while a traumatic fracture results from an external force or injury. Proper documentation is essential to differentiate between the two for accurate coding.