is an applicable hospital (as defined in paragraph (5)(C)) not subject to a payment change under paragraph (1) and for which the positive readmission ratio (described in subparagraph (C)) is greater than 1. (C) Positive readmission ratio The positive readmission ratio described in this subparagraph for a hospital is the ratio of— (i) the risk adjusted expected readmissions (described in subclause (II) of paragraph (4)(C)(i))