Typically Medicare covers 80% of eligible charges after you have paid your yearly Part B deductible. Every year, in addition to your monthly premium, you will have to pay the first $162 of covered expenses out of pocket for Part B services. If you have a supplemental insurance policy, that plan may pay the remaining portion of the cost of your equipment after the supplemental plan’s deductible has been satisfied. If you do not have a supplemental plan, the remaining portion will be considered your responsibility.