What Does Medicare Supplement Plan B Cover? 
It 's actually easier to say what it DOES N't cover . With a Part B supplement , you would pay : > All hospital costs after day 365 > $ 148/day for days 21-100 in a Skilled Nursing Facility and all costs after day 100 > $ 147 deductible against Part B services Other than that , the Plan N would fill in the gaps for Original Medicare . 