Fig. 1.

Readmission rates after TKA for all causes (solid line), for TKA-specific causes on the expanded list (dashed line [Enhanced]), and for CMS-defined TKA-specific causes (dotted line) were plotted against the year of readmission from 1997 to 2014 using the SPARCS NY State database as described in the Materials and Methods section. The shaded areas indicate the 95% CIs. The diagnoses defined as TKA-specific by the CMS and the expanded list of diagnoses defined as TKA-specific by an expert panel are shown in the Appendix.