To amend title XVIII of the Social Security Act to prevent the catastrophic loss of wage index reclassification.

Amends title XVIII (Medicare) of the Social Security Act to extend through FY2013 the reclassification to a specific Metropolitan Statistical Area (MSA) or New England County Metropolitan Area of any hospital so reclassified for FY2010 by the Medicare Geographic Classification Review Board, if: (1) that hospital would no longer qualify for such reclassification for FY2011; and (2) for FY2011 the average wage index for the geographic area in which such hospital is located is at least 0.1 less than the hospital's average wage index for FY2010.

Declares that such extension shall not result in the recalculation of any diluted wage index for hospitals otherwise utilizing the wage index of the geographic area to which such hospital is reclassified.