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v1.0.0
ICD-10 Guide
ICD-10 CodesM84.476

M84.476

Billable

Pathological fracture, unspecified foot

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

Code Description

ICD-10 M84.476 is a billable code used to indicate a diagnosis of pathological fracture, unspecified foot.

Key Diagnostic Point:

A pathological fracture of the foot occurs when a bone breaks in response to a disease process rather than due to trauma. This can be due to conditions such as osteoporosis, where bone density is significantly reduced, leading to increased fragility and susceptibility to fractures. Pathological fractures can also arise from other bone metabolism disorders, such as Paget's disease or metastatic cancer, which weaken the structural integrity of the bone. The foot is a complex structure composed of multiple bones, and fractures can occur in various locations, including the metatarsals, phalanges, and tarsal bones. The unspecified nature of this code indicates that the exact location of the fracture is not documented, which can complicate treatment and management. Patients with pathological fractures often present with pain, swelling, and difficulty bearing weight on the affected foot. Diagnosis typically involves imaging studies such as X-rays or MRI to confirm the fracture and assess the underlying bone condition. Treatment may include pain management, immobilization, and addressing the underlying bone density disorder to prevent future fractures.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Unspecified location of the fracture complicates coding.
  • Requires understanding of underlying bone density disorders.
  • Differentiating between traumatic and pathological fractures.
  • Potential for multiple comorbid conditions affecting bone health.

Audit Risk Factors

  • Inadequate documentation of the fracture's pathological nature.
  • Failure to document underlying conditions like osteoporosis.
  • Misclassification of the fracture type (traumatic vs. pathological).
  • Lack of imaging studies to support the diagnosis.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed imaging reports, clinical notes on fracture assessment, and documentation of underlying conditions.

Common Clinical Scenarios

Patients presenting with foot pain and a history of osteoporosis or other metabolic bone diseases.

Billing Considerations

Ensure that the documentation specifies the pathological nature of the fracture and any relevant comorbidities.

Endocrinology

Documentation Requirements

Records of bone density tests, treatment plans for osteoporosis, and any relevant lab results.

Common Clinical Scenarios

Patients with osteoporosis who experience fractures with minimal or no trauma.

Billing Considerations

Documentation should include details on the management of osteoporosis to support the diagnosis of a pathological fracture.

Coding Guidelines

Inclusion Criteria

Use M84.476 When
  • According to ICD
  • 10 guidelines, M84
  • 476 should be used when a pathological fracture is confirmed but the specific site is not documented
  • Coders should ensure that the underlying conditions contributing to the fracture are also coded appropriately

Exclusion Criteria

Do NOT use M84.476 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 a patient with a pathological fracture requires joint aspiration.

Documentation Requirements

Document the reason for the procedure and any imaging studies performed.

Specialty Considerations

Orthopedic specialists should ensure that the procedure is justified based on clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of fractures, including the ability to differentiate between traumatic and pathological fractures. This specificity aids in better tracking of patient outcomes and resource allocation for treatment.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of fractures, including the ability to differentiate between traumatic and pathological fractures. This specificity aids in better tracking of patient outcomes and resource allocation for treatment.

Reimbursement & Billing Impact

reimbursement.

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 due to underlying disease processes that weaken the bone, such as osteoporosis, while a traumatic fracture results from an external force or injury.