Medicare Reimbursement and Utilization Trends Within Skull Base Surgery.

Area of Science:

• Neurosurgery
• Otolaryngology
• Health Economics

Background:

• Medicare reimbursements for otolaryngology and neurosurgery procedures have generally declined since 2000.
• This study focuses on reimbursement trends for specific skull base surgery procedures.

Purpose of the Study:

• To analyze Medicare reimbursement trends for anterior cranial fossa, middle cranial fossa, posterior cranial fossa, pituitary surgery, and skull base reconstruction surgery from 2000-2022.
• To compare reimbursement changes with procedure volume trends over the study period.

Main Methods:

• Cross-sectional analysis of the Centers for Medicare and Medicaid Services Physician Fee Schedule (2000-2022).
• Inflation adjustment of reimbursement data to 2022 U.S. dollars.
• Analysis of Medicare procedure volume and total payment using the Centers for Medicare and Medicaid Services Part B National Summary Data File.

Main Results:

• Inflation-adjusted reimbursements decreased significantly across all analyzed skull base surgery categories (22.85% to 44.22%).
• Simultaneously, procedure volumes increased substantially in all subfields, with average annual rates ranging from 12.79% to 128.57%.
• Nominal per-service reimbursements showed an increase, but this was outpaced by inflation.

Conclusions:

• Despite a downward trend in inflation-adjusted reimbursement for skull base surgery, procedure volumes have markedly increased.
• This trend suggests growing utility and adoption of skull base surgical techniques, mirroring patterns in other surgical specialties.
• The findings indicate a divergence between reimbursement rates and the increasing clinical application of skull base surgery.