Adds a new paragraph (23) to subsection (t) specifying that reduced expenditures resulting from implementation of section 1899C shall not be taken into account in making budget neutrality adjustments under subsection (t).

Modifies clause (iv) and clause (v) of 1848(c)(2)(B) by adding a new subclause (VII) excluding section 1899C from application of clause (ii)(II) for one year after enactment of section 1899C, and adding subclause (XII) to identify reduced expenditures attributable to the Radiation Oncology Case Rate Value Based Payment Program (section 1899C) effective for fee schedules established following enactment of section 1899C.

Amends section 1128A of the Social Security Act by adding a new exception in subsection (i)(6) (subparagraph (K)) for provision of certain free or discounted transportation services by eligible entities for radiation therapy patients, and by adding a new subsection (t) defining terms used in that exception (including eligible entity, established patient, transportation services, rural area, urban area and a specified list of counties).