Medicare pays 80%, if they pay at all. In my dads case they didn't pay a dime when he went into the nursing home. Since they didnt pay neither would his primary ins. Aetna. Supposedly, most ins. co's. go off Medicare's lead. So supplemental ins is a must so u don't have to pay all out of pocket. Depending on your ailment, Medicare may not be an option. Even in some rehab situations Medicare(mediocrecare) will fight you tooth and nail....
I could go on and on.......
Generally Medicare will only pay for 100 days in a nursing home provided they went there after a 3 or more day stay in the hospital at the direction of the doctor. That is the way it was for my FIL. We all decided it was time for him to get the nursing care he needed (esophageal cancer). Doctor said, "let's get you in the hospital for 3 days and then send you to the nursing home." Pap refused. No way did he want to go to the Dr. It took several weeks to convince him to get checked in the hospital for 3 days. Then transferred to the nursing home. He lived at the nursing home for 101 days.
Supplemental usually will not pay for nursing home unless the hospital stay rule applies ... will pay for "therapy and/or rehab" but not for care... So, if you are thinking that at some point you might need long term care, check on long term care policies.
The 100 day window is actually for a skilled nursing facility, not a nursing home.