Mercy Hospital South

2Location

Saint Louis, MO

3Type

Not a teaching hospital · 767 beds · Nonprofit · Urban

4Payment adjustment factor, FY2027

0.9966

CMS’s value. A factor below one is a cut.

5Reduction

0.34%

cut One minus the factor, as a percent.

Readmissions, estimated FY2026 Estimate

−$509K

cut

The net across all three programs adds each program’s estimated dollars for FY2026, the latest year they share. Readmissions’ part can differ from the FY2027 values on this page.

This hospital across the programs

What CMS measured, FY2027

The conditions CMS measured for this hospital in FY2027, with the excess readmission ratio as CMS published it and the median of the hospital’s peer group.
Condition	Eligible discharges	Excess readmission ratio	Peer group median	Counted by CMS
Acute myocardial infarction (AMI)	393	1.0177 above 1	0.9965	Yes
Chronic obstructive pulmonary disease (COPD)	453	1.0935 above 1	0.9962	Yes
Heart failure (HF)	1,340	0.9973 at or below 1	0.9950	Yes
Pneumonia (PN)	1,348	1.0559 above 1	0.9955	Yes
Coronary artery bypass graft surgery (CABG)	147	0.9599 at or below 1	0.9895	No
Elective total hip or knee arthroplasty (THA/TKA)	96	1.0348 above 1	0.9936	Yes

A ratio above 1 means more readmissions than expected for the hospital’s patients. CMS counts a condition only when it has enough eligible discharges and its ratio is above the median of the hospital’s peer group, so a counted ratio can sit at or below 1. A counted condition adds to the hospital’s reduction, which can round to none.

Full explorer on Thirty Day Readmissions (opens in a new tab)

Source: CMS’s FY2027 Hospital Readmissions Reduction Program files, as pinned by Thirty Day Readmissions. CMS’s values appear as CMS published them; dollars are this site’s estimates.

A cut is a program’s formula at work, not a verdict on a hospital’s care. Nothing on this page ranks hospitals.