CMS performs the following calculations and adjustments to determine rates and payments: (a)National per capita growth percentage. (1) The national per capita growth percentage for a year, applied under § 422.306 , is CMS' estimate of the rate of growth in per capita expenditures under this title for an individual entitled to benefits under Part A and enrolled under Part B. CMS may make separate estimates for aged enrollees, disabled enrollees, and enrollees who have ESRD. (2) The amount calculated
(a)General. (1) A person that has received an overpayment must report and return the overpayment in the form and manner set forth in this section. (2) A person has identified an overpayment when the person has, or should have through the exercise of reasonable diligence, determined that the person has received an overpayment and quantified the amount of the overpayment. A person should have determined that the person received an overpayment and quantified the amount of the overpayment if the person