; or (iv) in any other case in which the adjudicator determines that consolidation would promote administrative efficiency, consistent with such standards as the Secretary may establish by regulation. (B) Deadlines The Secretary may establish applicable timeframes for appellants to request consolidations and for adjudicators to issue decisions on appeals that have been consolidated. (2) Requirements for claims that were included in an extrapolated overpayment or previously consolidated An individual or entity requesting a redetermination, reconsideration, review or hearing under subsection (a)(3), (b), (c), or (d) with respect to two or more claims that were included in an extrapolated overpayment, or claims that were consolidated into a single appeal at a lower-level adjudication under this section, must submit a single request for review or hearing with respect to such claims in order to be entitled to a review or hearing. (3) Authority to use statistical sampling and extrapolation methodologies in adjudications With the consent of the appellant, an adjudicator may use statistical sampling and extrapolation methodologies in reaching a decision with respect to a claim or claims for benefits for items or services furnished under part A or B. When an appeal involves a decision that was based on a statistical sample at the lower level, the adjudicator's decision shall be based on the same statistical sample. . (b) Effective date (1) In general Except as provided in paragraph (2), the amendments made by this section shall apply to requests for review that are filed after the date of the enactment of this Act. (2) Exception The requirements described in subsection (j)(2) of section 1869 of the Social Security Act ( 42 U.S.C. 1395ff ), as added by subsection (a), shall apply to requests for review and requests for hearing that are pending at any level of appeal as of the date of enactment of this Act and to those filed after such date. 6. Identification and referral of fraud Not later than 1 year after the date of