; or (ii) if the covered payer determines that there are no such payments due after the date of the overpayment, the covered claimant shall refund the amount of such overpayment not later than 30 days after such determination. (B) (i) Before deducting any amount from a payment to a covered claimant under subparagraph (A), the covered payer shall ensure that the covered claimant is provided an opportunity— (I) to dispute the existence or amount of any overpayment owed to the covered payer