Medicare reimburses DMEPOS: 

a. either 80 percent of the actual charge for the item or the DMEPOS fee schedule amount, whichever is lower 

b. either 60 percent of the actual charge for the item or the DMEPOS fee schedule amount, whichever is lower 

c. either 60 percent of the actual charge for the item or the DMEPOS fee schedule amount, whichever is higher 

d. either 80 percent of the actual charge for the item or the DMEPOS fee schedule amount, whichever is higher