To address the 164 incorrectly billed hospital claims in our sample, we recommend that the Centers for Medicare & Medicaid Services: CMS notifies appropriate providers (i.e., those for whom CMS determines this audit constitutes credible information of potential overpayments) so that the providers can exercise reasonable diligence to identify, report, and return any overpayments in accordance with the 60-day rule, and identify any of those returned overpayments as having been made in accordance with this recommendation.