In response to a report from the Health and Human Services (HHS) Office of Inspector General (OIG) that Medicare improperly paid for medications during Part A Skilled Nursing Facility (SNF) stays, the Centers for Medicare & Medicaid Services (CMS) has updated the SNF Billing Reference. This educational tool from the Medicare Learning Network has been updated to clarify when to bill Medicare Part A and when to bill the Medicare Part D drug plan for a patient’s prescription drugs.