), an entity selected under paragraph (3) determines, subject to subparagraph (B) and in accordance with the succeeding provisions of this subsection, the amount of payment under the health plan for such item or service furnished by such provider or facility. (B) Authority to continue negotiations Under the mediated dispute process, in the case that the parties to a determination for a qualified mediated dispute item or service agree on a payment amount for such item or service during such process but before the date on which the entity selected with respect to such determination under paragraph (3) makes such determination, such amount shall be treated for purposes of subsection (k)(11)(B) as the amount agreed to by such parties for such item or service. In the case of an agreement described in the previous sentence, the mediated dispute process shall provide for a method to determine how to allocate between the parties to such determination the payment of the compensation of the entity selected with respect to such determination. (3) Selection under mediated dispute process Under the mediated dispute process, the Secretary shall, with respect to the determination of the amount of payment under this subsection of a qualified mediated dispute item or service, provide for a method— (A) that allows the parties to such determination to jointly select, not later than the last day of the 3-day period following the date of the initiation of the process with respect to such item or service, for purposes of making such determination, an entity certified under paragraph (7) that— (i) is not a party to such determination or an employee or agent of such a party