Single Institutional Experience with Single Stage Sacral Neuromodulation: Cost Savings and Outcomes in a Contemporary Case Series

Purpose:Sacral neuromodulation is traditionally performed in 2 stages. Studies have projected that 1-stage sacral neuromodulation is cost-effective if the conversion rate is 61.3% or greater. To our knowledge we present the first case series in the literature to evaluate the cost of 1-stage sacral neuromodulation. The objective of our study was to evaluate outcomes and analyze cost using our institutional experience with 1-stage sacral neuromodulation.Materials and Methods:A total of 15 consecutive 1-stage sacral neuromodulation procedures were performed at a self-insured, integrated health care institution. Cost data were determined using 2019 Medicare reimbursement rates for CPT codes 64581, 64585, 64590 and 64595. Median operative time was derived from actual institutional data.Results:One-stage sacral neuromodulation implantation was performed in 15 patients. Median followup was 14.6 months (IQR 6.9-22.5). Of the 15 cases 14 (93.3%) were successful, defined as a 50% or greater improvement from baseline. Total reimbursement for the 15 patients who underwent 1-stage implantation was $329,430. If these patients had undergone traditional 2-stage implantation with equivalent outcomes, the overall reimbursement was determined to be $414,796. Single-stage sacral neuromodulation implantation provided a calculated total cost savings of $85,366 (p <0.01). Moreover, a projected 233 minutes in operative time was saved by performing 1-stage sacral neuromodulation (p <0.01).Conclusions:This study demonstrates the potential health care savings of a 1-stage sacral neuromodulation procedure. Moreover, 1-stage sacral neuromodulation may have other added benefits, such as reduced infection rates, patient satisfaction and other indirect cost savings, including reduced time off from work.