Transplants require certain drugs — before and after surgery — to ensure success, and Medicare Part D can cover some drugs that Part B does not. If your heart transplant was done at a Medicare-approved facility, Medicare Part B does cover your immunosuppressive drugs for as long as you have Medicare if you: false If you had any other medical coverage other than Medicare at the time of your transplant but then later became eligible for Medicare, Part D can cover your immunosuppressant drugs. While it’s important to know the answers to these questions for your own peace of mind, if you have the gift of health, consider paying it forward. You could save up to eight lives through organ and tissue donation. Become an organ donor today to help save lives.