Medicare Regulation 42 CFR §405.378 provides for the assessment of interest at the higher of the current value of funds rate of 1 percent for calendar year 2010 or the private consumer rate as fixed by the Department of the Treasury. The Department of the Treasury has notified the Department of Health and Human Services that the private consumer rate has been changed to 11.25 percent effective January 25, 2010, for Medicare overpayments and underpayments.

Source: Change Request 6652