Identification of counties
(A) In general The Secretary shall identify— (i) those counties and areas (in this paragraph referred to as “primary care scarcity counties”) with the lowest primary care ratios that represent, if each such county or area were weighted by the number of individuals determined under paragraph (2)(B), an aggregate total of 20 percent of the total of the individuals determined under such paragraph; and (ii) those counties and areas (in this subsection referred to as “specialist care scarcity counties”) with the lowest specialist care ratios that represent, if each such county or area were weighted by the number of individuals determined under paragraph (2)(B), an aggregate total of 20 percent of the total of the individuals determined under such paragraph.
(B) Periodic revisions The Secretary shall periodically revise the counties or areas identified in subparagraph (A) (but not less often than once every three years) unless the Secretary determines that there is no new data available on the number of physicians practicing in the county or area or the number of individuals residing in the county or area, as identified in paragraph (2).
(C) Identification of counties where service is furnished For purposes of paying the additional amount specified in paragraph (1), if the Secretary uses the 5-digit postal ZIP Code where the service is furnished, the dominant county of the postal ZIP Code (as determined by the United States Postal Service, or otherwise) shall be used to determine whether the postal ZIP Code is in a scarcity county identified in subparagraph (A) or revised in subparagraph (B).
(D) Special rule With respect to physicians’ services furnished on or after January 1, 2008 , and before July 1, 2008 , for purposes of this subsection, the Secretary shall use the primary care scarcity counties and the specialty care scarcity counties (as identified under the preceding provisions of this paragraph) that the Secretary was using under this subsection with respect to physicians’ services furnished on December 31, 2007 .
(E) Judicial review There shall be no administrative or judicial review under section 1395ff, 1395 oo of this title, or otherwise, respecting— (i) the identification of a county or area; (ii) the assignment of a specialty of any physician under this paragraph; (iii) the assignment of a physician to a county under paragraph (2); or (iv) the assignment of a postal ZIP Code to a county or other area under this subsection.