Notwithstanding that an individual is not entitled to have payment made under this part for inpatient hospital services furnished by any hospital, payment shall be made to such hospital (unless it elects not to receive such payment or, if payment has already been made by or on behalf of such individual, fails to refund such payment within the time specified by the Secretary) for such services which are furnished to the individual prior to notification to such hospital from the Secretary of his lack of entitlement, if such payments are precluded only by reason of section
1395d of this title and if such hospital complies with the requirements of and regulations under this subchapter with respect to such payments, has acted in good faith and without knowledge of such lack of entitlement, and has acted reasonably in assuming entitlement existed. Payment under the preceding sentence may not be made for services furnished an individual pursuant to any admission after the 6th elapsed day (not including as an elapsed day Saturday, Sunday, or a legal holiday) after the day on which such admission occurred.