Senior Blue Medicare Supplement (Medigap) plans help pay for costs that are not covered by Original Medicare, such as deductibles, coinsurance and copayments. Senior Blue offers you a choice of five plans - Plan A, G, High Deductible G, K, and N. With Senior Blue, you have the ability to choose any doctor, specialist or hospital that accepts Medicare - with no limitations or no referrals. Like other Medicare Supplement plans, Senior Blue does not come with Part D prescription drug coverage.