Medicaid Reimbursement for Common Orthopedic Trauma Procedures is 16.0% Less Compared to Medicare with Substantial Variability Between States.

Abstract

This study seeks to evaluate the variability of Medicaid reimbursement and compare it to Medicare reimbursement using the 20 most commonly billed orthopedic trauma CPT codes nationwide. The authors anticipate significant variability between states and hypothesize that Medicaid payment will be significantly less than Medicare payment. The top 20 most common orthopedic trauma surgery procedural codes were identified from a previous analysis performed by Haglin et al.1 The Centers for Medicare and Medicaid services physician fee schedule was used to determine reimbursement rates from Medicare, and state Medicaid fee schedules were used to determine reimbursement rates for Medicaid. State Medicaid rates were compared to their corresponding Medicare rates to determine a dollar difference. Additionally, the dollar difference for each CPT code was divided by its respective physician relative value unit (RVU). This was utilized to acknowledge the possible variability in the complexity of orthopedic procedures and the related physician effort. The Medicare Wage Index was used to adjust Medicaid rates based on the cost of living for the state as well. Coefficients of variation were calculated to represent overall variability in Medicaid and Medicare reimbursement rates. The mean reimbursement rates for Medicaid were lower for all 20 procedures compared to Medicare. On average, Medicaid reimbursed 16.0% less than Medicare, and 29.6% less when adjusting for cost-of-living. MCD reimbursed at a higher rate than MCR for all procedures in only nine states (Alaska, Arizona, Arkansas, Montana, Nebraska, New Jersey, New Mexico, and North Dakota, and South Dakota) while 38 states reimbursed at a lower rate than MCR, on average. The coefficient of variation ranged from 0.24 to 0.34 for the Medicaid unadjusted group and from 0.35 to 0.46 for the Medicare Wage-Index adjusted group. In contrast, the Medicare group was consistent at 0.06 for all 20 procedures. The average dollar difference across the 20 CPT codes for Medicaid reimbursement compared to Medicare ranged from -$76.89 to -$225.17, and the dollar difference per relative value unit ranged from -$5.96 to -$15.16. This study found a high amount of variation between state Medicaid reimbursement rates and average rates that were significantly lower than Medicare reimbursement rates for the top twenty most utilized orthopedic trauma CPT codes as identified by Haglin et al. The discrepancy in reimbursement was increased when Medicaid rates were adjusted for state cost-of-living. Level III. See Instructions for Authors for a complete description of levels of evidence.