; (2) incentive payments for participation in eligible alternative payment models under section 1833(z) of such Act ( 42 U.S.C. 1395l(z) ); (3) the shared savings program under section 1899 of such Act ( 42 U.S.C. 1395jjj ); (4) models under section 1115A of such Act ( 42 U.S.C. 1315a ); and (5) such other payment systems or models as the Secretary may specify. 6. Amputation prevention pilot program (a) In general Section 1115A(b)(2)(B) of the Social Security Act ( 42 U.S.C. 1315a(b)(2)(B) ) is amended by adding at the end the following new clause: (xxviii) Promoting voluntary, nontraumatic lower-limb major amputation prevention programs at hospitals, ambulatory surgical centers, and office-based centers that will increase access to amputation prevention services, reduce amputation rates, and reduce costs to such hospitals, surgical centers, and office-based centers, through— (I) patient risk modification and management; (II) early screening and detection and surveillance; (III) testing and treatment for peripheral artery disease; and (IV) improved care coordination for individuals at high risk for amputation. . (b) Testing of model Not later than 18 months after the date of the enactment of this Act, the Deputy Administrator and Director of the Center for Medicare and Medicaid Innovation shall test the model described under subsection (a).