In this column,  Laura Linley, CRTT, RPSGT, FAAST, revisited the Medicare (MCR) provider compliance tips related to polysomnography/sleep studies and found that there are no substantive new changes or tips posted for this service line. As a health care provider, you should understand Medicare coverage before providing services or items to Medicare patients. Because extensive coverage information is readily available, Medicare has made it known that they expect health care providers to know their coverage requirements in order to avoid payment denial.