Answer:
For 2010, if you were hospitalized in a skilled nursing facility, Medicare would pay for the first 20 days of your skilled nursing stay providing it was preceded by an Inpatient Stay of at least 3 days (which inpatient stay has a $1,100 deductible for the first 60 day benefit period). After that you have the following co-insurance:
Days 21-100 - Medicare pays everything except $137.50 per day, which you pay
Days 101+ - Medicare pays $0.00 and you are liable for all costs