Medicare Supplement Plan A offers just the Basic Benefits while Plan B covers Basic Benefits plus a benefit for the Medicare Part A deductible. The Medicare Part A deductible could be one of your largest out-of-pocket expenses if you need to spend time in a hospital. Plans A and B generally have higher out-of-pocket costs for things like Skilled Nursing Facility Coinsurance, Medicare Part B Excess Charges, and Foreign Travel Emergency Care.

Plans C, F and G offer the most supplemental coverage, paying many of your out-of-pocket costs for Medicare-approved services. Consider one of these plans if you are willing to pay a monthly premium that is typically higher in exchange for more covered benefits and lower out-of-pocket costs.
 

¹ You may only apply for plans C and F if you were first eligible for Medicare before 2020.

Plans K and L are cost-sharing plans offering lower monthly premiums. The premiums are typically lower because, for some services, they pay a percentage of the coinsurance instead of the full coinsurance amount. Once the out-of-pocket limit is reached, these plans pay 100% of covered services for the rest of the calendar year.

Plan N covers the Medicare Part B coinsurance, but you pay copayments for covered doctor office and emergency room visits in exchange for a monthly premium that tends to be more mid-range.