How Often Will Medicare Replace A CPAP Machine? 
I am having a hard time finding a definitive answer to this question . It appears that Medicare can replace a Cpap machine every 5 years , but it is not clear whether there has to be justification for it -LRB- i.e. a new model would more effectively treat the sleep apnea , etc -RRB- . If a Cpap machine is replaced , it is called a restart , and the machine is rented for the first year before becoming the property of the Cpap user . 