42 C.F.R. § 405.938
(c) Notice of the Council's action.
(3) Notice of the Council's decision or remand order is issued to the eligible party (or the party's representative).
(iii)
(4) Notice of a Council decision, favorable or partially favorable to the eligible party, that modifies or reverses the decision or recommended decision by an ALJ or attorney adjudicator, or a remand order that is favorable to the eligible party, is issued to the SNF, as applicable, and to the hospital in the case of an appeal filed by, or on behalf of, a beneficiary not enrolled in the Supplementary Medical Insurance program (Medicare Part B) at the time of hospitalization.
(i)
(d) Effect of a favorable Council decision.
(1)
(2) In order to determine Part A benefits to be paid and to make payment for covered services as a result of a favorable decision, as applicable—
(e) Effect of an unfavorable or partially favorable Appeals Council decision.
(f) Judicial review.