• Jessica I Billig, Wen-Ching Lan, Kevin C Chung, Chang-Fu Kuo, and Erika D Sears.
• VA/National Clinician Scholars Program, VA Center for Clinical Management Research, VA Ann Arbor Healthcare System, Ann Arbor, Michigan.
• Ann. Surg. 2020 Sep 1; 272 (3): 530-536.

ObjectiveTo examine temporal trends of OOP expenses, total payments, facility fees, and professional fees for outpatient surgery.Summary Background DataApproximately 48 million outpatient surgeries are performed annually with a limited financial understanding of these procedures. High OOP expenses may influence treatment decisions, delay care, and cause financial burden for patients.MethodsWe conducted a retrospective cohort study of patients with employer-sponsored insurance undergoing common outpatient surgical procedures (cholecystectomy, cataract surgery, meniscectomy, muscle/tendon procedures, and joint procedures) from 2011 to 2017. Total payments for surgical encounters paid by the insurer/employer and patient OOP expenses were calculated. We used multivariable linear regression to predict total payments and OOP expenses, with costs adjusted to the 2017 US dollar.ResultsWe evaluated 5,261,295 outpatient surgeries (2011-2017). Total payments increased by 29%, with a 53% increase in facility fees and no change in professional fees. OOP expenses grew by 50%. After controlling for procedure type, procedures performed in ambulatory surgery centers conferred an additional $2019 in predicted total payments (95%CI:$2002-$2036) and $324 in OOP expenses (95%CI:$319-$328) compared to predicted cost for office-based procedures. Hospital-based procedures cost an additional $2649 in predicted total payments (95%CI:$2632-$2667) and $302 in predicted OOP expenses (95%CI:$297-$306) compared to office procedures.ConclusionIncreases in outpatient surgery total payments were driven primarily by facility fees and OOP expenses. OOP expenses are rising faster than total payments, highlighting the transition of costs to patients. Healthcare cost reduction policies should consider the largest areas of spending growth such as facility fees and OOP expenses to minimize the financial burden placed on patients.Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.

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