Medicare Supplement Plan D is also reffered to as Medigap Plan D.
This plan helps pay: The Medicare Part A coinsurance and hospital costs, the Medicare Part B coinsurance or copayment, first 3 pints of blood, the Medicare Part A hospice care coinsurance or copayment, Skilled nursing facility care coinsurance, the Part A deductible and 80% of emergecy foreign travel (up to plan limits).
It is important not to confuse Medigap Plan D with Medicare Part D (Prescription drug coverage).