Medicare's Coverage of Mental Health Benefits Does Your Medicare Plan Cover B12 Shots? Vitamin B 12 Injection Mobile and Clinic IV Therapy ASAP IVs IV Hydration Experts of San Diego, Phoenix, Scottsdale, San Francisco Did you know Medicare covers medications differently depending on where you receive them? Part A covers medications given during a hospital stay, like anesthesia. Part B covers certain outpatient Part A: In the hospital, it's your friend, Covers meds until your stay comes to an end. If not covered there, don't you fret, Part B or D might be your best