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ICD-10 Guide
ICD-10 CodesM84.529

M84.529

Billable

Pathological fracture in neoplastic disease, unspecified humerus

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

Code Description

ICD-10 M84.529 is a billable code used to indicate a diagnosis of pathological fracture in neoplastic disease, unspecified humerus.

Key Diagnostic Point:

Pathological fractures in neoplastic disease occur when a bone is weakened by the presence of a tumor, leading to an increased risk of fracture even with minimal or no trauma. In the case of the unspecified humerus, the fracture can arise from primary bone tumors or metastatic lesions from other cancers. These fractures are often associated with conditions such as osteoporosis, where bone density is compromised, making the bone more susceptible to fractures. The humerus, being a long bone in the upper arm, is particularly vulnerable in patients with malignancies affecting bone metabolism. The diagnosis of a pathological fracture typically involves imaging studies such as X-rays or MRIs, which can reveal the fracture and any underlying neoplastic changes. Treatment may involve surgical intervention, such as fixation or stabilization of the fracture, and addressing the underlying neoplastic disease through chemotherapy, radiation, or other oncological therapies. Accurate coding is essential for proper reimbursement and to reflect the complexity of care provided to these patients.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between primary and metastatic neoplasms
  • Understanding the impact of bone density disorders on fracture risk
  • Identifying the specific location of the fracture within the humerus
  • Documenting the underlying neoplastic disease accurately

Audit Risk Factors

  • Inadequate documentation of the neoplastic disease
  • Failure to specify the location of the fracture
  • Misclassification of the fracture type (pathological vs. traumatic)
  • Lack of imaging studies to support the diagnosis

Specialty Focus

Medical Specialties

Oncology

Documentation Requirements

Detailed history of the neoplastic disease, imaging results, and treatment plans.

Common Clinical Scenarios

Patients with metastatic breast cancer presenting with humeral fractures.

Billing Considerations

Ensure that the primary cancer diagnosis is clearly documented to support the pathological fracture coding.

Orthopedics

Documentation Requirements

Surgical notes, imaging studies, and post-operative care details.

Common Clinical Scenarios

Patients undergoing surgical fixation of a humeral fracture due to underlying malignancy.

Billing Considerations

Document the type of fracture and any relevant surgical interventions performed.

Coding Guidelines

Inclusion Criteria

Use M84.529 When
  • According to ICD
  • 10 guidelines, M84
  • 529 should be used when a pathological fracture is confirmed in a patient with a neoplastic disease affecting the humerus
  • Documentation must include the type of neoplasm and any relevant imaging studies

Exclusion Criteria

Do NOT use M84.529 When
  • Exclusion criteria include fractures not related to neoplastic disease

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 aspiration and any findings.

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 accuracy of data collection and reimbursement processes. M84.529 provides a clear framework for documenting fractures related to neoplastic diseases.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of pathological fractures, improving the accuracy of data collection and reimbursement processes. M84.529 provides a clear framework for documenting fractures related to neoplastic diseases.

Reimbursement & Billing Impact

reimbursement processes. M84.529 provides a clear framework for documenting fractures related to neoplastic diseases.

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, such as cancer or osteoporosis, while a traumatic fracture results from an external force or injury.