the term Secretary means the Secretary of Health and Human Services. (j) Authorization of appropriations There are authorized to be appropriated such sums as may be necessary to carry out this section. 412. Critical access hospital improvements (a) Elimination of isolation test for cost-Based ambulance reimbursement (1) In general Section 1834(l)(8) of the Social Security Act ( 42 U.S.C. 1395m(l)(8) ) is amended— (A) in subparagraph (B)— (i) by striking owned and