ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesM84.478

M84.478

Billable

Pathological fracture, left toe(s)

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

Code Description

ICD-10 M84.478 is a billable code used to indicate a diagnosis of pathological fracture, left toe(s).

Key Diagnostic Point:

A pathological fracture of the left toe(s) occurs when a bone in the toe breaks due to an underlying disease or condition rather than from a direct trauma or injury. This type of fracture is often associated with bone density disorders such as osteoporosis, where the bones become weak and brittle, increasing the risk of fractures even with minimal or no trauma. Pathological fractures can also arise from conditions like metastatic cancer, osteogenesis imperfecta, or Paget's disease, which affect bone metabolism and integrity. In the case of the left toe(s), the fracture may involve any of the phalanges or metatarsal bones, leading to pain, swelling, and difficulty in ambulation. Diagnosis typically involves imaging studies such as X-rays or MRI to confirm the fracture and assess the underlying bone condition. Treatment may include immobilization, pain management, and addressing the underlying bone density disorder to prevent future fractures.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between traumatic and pathological fractures
  • Understanding the underlying conditions contributing to the fracture
  • Documentation of the specific location and type of fracture
  • Need for comprehensive patient history regarding bone health

Audit Risk Factors

  • Inadequate documentation of the underlying bone condition
  • Failure to specify the exact location of the fracture
  • Misclassification of a traumatic fracture as pathological
  • Lack of supporting imaging reports

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed notes on fracture type, location, and any underlying conditions affecting bone health.

Common Clinical Scenarios

Patients presenting with fractures after minimal trauma, especially in older adults.

Billing Considerations

Ensure that all imaging studies and treatment plans are documented to support the diagnosis.

Endocrinology

Documentation Requirements

Documentation of bone density tests and management of osteoporosis or other metabolic bone diseases.

Common Clinical Scenarios

Patients with osteoporosis experiencing fractures.

Billing Considerations

Linking the fracture to the underlying metabolic disorder is crucial for accurate coding.

Coding Guidelines

Inclusion Criteria

Use M84.478 When
  • According to ICD
  • 10 guidelines, M84
  • 478 should be used when a pathological fracture is confirmed, and the underlying condition is documented
  • It is essential to include any relevant history of osteoporosis or other bone density disorders

Exclusion Criteria

Do NOT use M84.478 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

73630CPT Code

Radiologic examination, foot; complete, minimum of 3 views

Clinical Scenario

Used to confirm the diagnosis of a pathological fracture in the left toe.

Documentation Requirements

Radiology report must be included in the patient's medical record.

Specialty Considerations

Orthopedic specialists should ensure that imaging correlates with the 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 pathological fractures, enabling better tracking of conditions like osteoporosis and their complications. M84.478 provides a clear distinction from traumatic fractures, improving data accuracy for epidemiological studies and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of pathological fractures, enabling better tracking of conditions like osteoporosis and their complications. M84.478 provides a clear distinction from traumatic fractures, improving data accuracy for epidemiological studies and treatment outcomes.

Reimbursement & Billing Impact

reimbursement and supports quality care initiatives.

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 an underlying disease that weakens the bone, while a traumatic fracture results from an external force or injury. Proper documentation is essential to differentiate between the two for accurate coding.