Use and Costs of Supplemental Benefits in Medicare Advantage, 2017-2021.

Importance: Nearly all Medicare Advantage (MA) plans offer dental, vision, and hearing benefits not covered by traditional Medicare (TM). However, little is known about MA enrollees' use of those benefits or how much they cost MA insurers or enrollees.

Objective: To estimate use, out-of-pocket (OOP) spending, and insurer payments for dental, hearing, and vision services among Medicare beneficiaries.

Design, Setting, And Participants: This cross-sectional analysis used pooled 2017-2021 Medical Expenditure Panel Survey (MEPS) and Medicare Current Beneficiary Survey (MCBS) data for MA and TM beneficiaries (excluding those also covered by Medicaid). The analysis was performed from September 10, 2023, to June 30, 2024.

Exposures: MA compared with TM coverage.

Main Outcomes And Measures: The main outcome was receipt of eye examinations, corrective lenses, hearing aids, optometry and dental visits, and MA and TM enrollees' and insurers' spending for such services. MEPS and MCBS data were weighted to be nationally representative.

Results: We included 76 557 non-dually eligible Medicare beneficiaries, including 23 404 from the MEPS and 53 153 from the MCBS. Weighted demographic characteristics of MA and TM beneficiaries were similar (54.7% and 51.9% female; 39.8% and 35.2% older than 75 years, respectively). Only 54.2% (95% CI, 52.4%-55.9%) and 54.3% (95% CI 52.2%-56.3%) of MA beneficiaries were aware of having MA dental and vision coverage, respectively. MA enrollees were no more likely to receive eye examinations, hearing aids, or eyeglasses than TM enrollees. After adjustment for demographic differences, MA and TM enrollees paid OOP $205.86 (95% CI, $192.44-$219.27) and $226.12 (95% CI, $212.02-$240.23), respectively, for eyeglasses (MA - TM difference, -$20.27 [95% CI, -$33.77 to -$6.77] or -9.0% [95% CI, -14.9% to -3.0%]); $226.82 (95% CI, $202.24-$251.40) and $249.98 (95% CI, $226.22-$273.74) for dental visits, respectively (MA - TM difference, -$23.16 [95% CI, -$43.15 to -$3.17] or -9.3% [95% CI, -17.3% to -1.3%]); and no less for optometry visits or durable medical equipment (a proxy for hearing aids). Nationwide, MA plans' annual spending on vision, dental services, and durable medical equipment totaled $3.9 billion (95% CI, $3.3-$4.4 billion), while enrollees spent OOP $9.2 billion (95% CI, $8.2-$10.2 billion) annually for these services and other private insurers covered $2.8 billion (95% CI, $2.7-$3.0 billion).

Conclusions And Relevance: In this cross-sectional study of 2 nationally representative surveys, MA beneficiaries did not receive more supplemental services than TM beneficiaries, possibly because of cost-sharing and limited awareness of benefit coverage.