What Does Medicare Co Insurance Mean? 
Medicare coinsurance is the amount you must pay after satisfying your Medicare Part A or Part B deductible . Medicare Part A has a per admission deductible -LRB- $ 1184 in 2013 -RRB- . After paying your deductible most hospital charges are covered by Medicare for the first 60 days . After that Medicare pays a portion and you pay the rest -LRB- coinsurance -RRB- . Medicare Part B also has a deductible -LRB- $ 147 in 2013 -RRB- . After that , Medicare pays 80 % of approved plans and you pay the coinsurance , or the remaining 20 % . 