With original Medicare, you pay to use Part A services. If you go to a hospital, you will pay $1,100 for up to 60 days. If you need to stay in the hospital for up to another 30 days, your cost is $275 for days 61-90. Part A also covers another 60 days over the course of one's lifetime, and the co-pay for those days is another $550 per day. These costs add up. Hospital charges alone (not including Medicare Part B doctors costs) can add up to over $42,000 if you stay in the hospital for 150 days. If you had to stay longer, original Medicare Part A would not cover those costs. Most health insurance policies cover a good portion of these costs and protect you for a year or more of hospitalization.