In any case in which—
(A)#
an individual makes an allegation that a monthly benefit under this subchapter was due him in a particular month but was not paid to him, and
(B)#
such individual submits a written request for the payment of such benefit—
(i) in the case of an individual who received a regular monthly benefit in the month preceding the month with respect to which such allegation is made, not less than 30 days after the 15th day of the month with respect to which such allegation is made (and in the event that such request is submitted prior to the expiration of such 30-day period, it shall be deemed to have been submitted upon the expiration of such period), and
(ii) in any other case, not less than 90 days after the later of (I) the date on which such benefit is alleged to have been due, or (II) the date on which such individual furnished the last information requested by the Commissioner of Social Security (and such written request will be deemed to be filed on the day on which it was filed, or the ninetieth day after the first day on which the Commissioner of Social Security has evidence that such allegation is true, whichever is later),
(B)(i)#
in the case of an individual who received a regular monthly benefit in the month preceding the month with respect to which such allegation is made, not less than 30 days after the 15th day of the month with respect to which such allegation is made (and in the event that such request is submitted prior to the expiration of such 30-day period, it shall be deemed to have been submitted upon the expiration of such period), and
(B)(ii)#
in any other case, not less than 90 days after the later of (I) the date on which such benefit is alleged to have been due, or (II) the date on which such individual furnished the last information requested by the Commissioner of Social Security (and such written request will be deemed to be filed on the day on which it was filed, or the ninetieth day after the first day on which the Commissioner of Social Security has evidence that such allegation is true, whichever is later),
the Commissioner of Social Security shall, if the Commissioner finds that benefits are due, certify such benefits for payment, and payment shall be made within 15 days immediately following the date on which the written request is deemed to have been filed.