Acute Care Hospitals · Voluntary non-profit - Private
Mercy Hospital South
- 10010 Kennerly Road, Saint Louis, MO 63128
- (314) 525-1000
- Acute Care Hospitals
- Emergency services available 24/7
At a glance
Mercy Hospital South carries a 2-star CMS overall rating — below the national norm. On healthcare-associated infection measures, it performs better than the national average on 6 and worse on 0.
Healthcare-Associated Infections
lower is better · 36 measures reported
Rates of infections patients can acquire while receiving care, such as central-line and catheter-associated infections, MRSA, and C. difficile.
| Measure | Score | Compared to national |
|---|---|---|
| Central Line Associated Bloodstream Infection (ICU + select Wards): Lower Confidence Limit | 0.170 | Same as national |
| Central Line Associated Bloodstream Infection (ICU + select Wards): Upper Confidence Limit | 1.027 | Same as national |
| Central Line Associated Bloodstream Infection: Number of Device Days | 10438 | Same as national |
| Central Line Associated Bloodstream Infection (ICU + select Wards): Predicted Cases | 10.792 | Same as national |
| Central Line Associated Bloodstream Infection (ICU + select Wards): Observed Cases | 5 | Same as national |
| Central Line Associated Bloodstream Infection (ICU + select Wards) | 0.463 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Lower Confidence Limit | 0.179 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Upper Confidence Limit | 1.080 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Number of Urinary Catheter Days | 7780 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Predicted Cases | 10.259 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Observed Cases | 5 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards) | 0.487 | Same as national |
| SSI - Colon Surgery: Lower Confidence Limit | 0.521 | Same as national |
| SSI - Colon Surgery: Upper Confidence Limit | 2.672 | Same as national |
| SSI - Colon Surgery: Number of Procedures | 169 | Same as national |
| SSI - Colon Surgery: Predicted Cases | 4.671 | Same as national |
| SSI - Colon Surgery: Observed Cases | 6 | Same as national |
| SSI - Colon Surgery | 1.285 | Same as national |
| SSI - Abdominal Hysterectomy: Lower Confidence Limit | 0.303 | Same as national |
| SSI - Abdominal Hysterectomy: Upper Confidence Limit | 5.974 | Same as national |
| SSI - Abdominal Hysterectomy: Number of Procedures | 128 | Same as national |
| SSI - Abdominal Hysterectomy: Predicted Cases | 1.106 | Same as national |
| SSI - Abdominal Hysterectomy: Observed Cases | 2 | Same as national |
| SSI - Abdominal Hysterectomy | 1.808 | Same as national |
| MRSA Bacteremia: Lower Confidence Limit | 0.231 | Same as national |
| MRSA Bacteremia: Upper Confidence Limit | 1.183 | Same as national |
| MRSA Bacteremia: Patient Days | 155788 | Same as national |
| MRSA Bacteremia: Predicted Cases | 10.546 | Same as national |
| MRSA Bacteremia: Observed Cases | 6 | Same as national |
| MRSA Bacteremia | 0.569 | Same as national |
| Clostridium Difficile (C.Diff): Lower Confidence Limit | 0.117 | Better than national |
| Clostridium Difficile (C.Diff): Upper Confidence Limit | 0.249 | Better than national |
| Clostridium Difficile (C.Diff): Patient Days | 152161 | Better than national |
| Clostridium Difficile (C.Diff): Predicted Cases | 155.853 | Better than national |
| Clostridium Difficile (C.Diff): Observed Cases | 27 | Better than national |
| Clostridium Difficile (C.Diff) | 0.173 | Better than national |
Complications & Deaths
lower is better · 20 measures reported
Rates of serious complications (like hip/knee replacement problems or accidental cuts during surgery) and 30-day mortality rates for common conditions.
| Measure | Score | Compared to national | Sample |
|---|---|---|---|
| Rate of complications for hip/knee replacement patients | 3.7 | Same as national | 122 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality Rate | 3.7 | Same as national | 2512 |
| Death rate for heart attack patients | 10.4 | Same as national | 172 |
| Death rate for CABG surgery patients | 2.9 | Same as national | 76 |
| Death rate for COPD patients | 9 | Same as national | 200 |
| Death rate for heart failure patients | 12.5 | Same as national | 677 |
| Death rate for pneumonia patients | 16.3 | Same as national | 634 |
| Death rate for stroke patients | 12 | Same as national | 443 |
| Pressure ulcer rate | 0.82 | Same as national | 9635 |
| Death rate among surgical inpatients with serious treatable complications | 202.05 | Same as national | 122 |
| Iatrogenic pneumothorax rate | 0.25 | Same as national | 11549 |
| In-hospital fall-associated fracture rate | 0.27 | Same as national | 11399 |
| Postoperative hemorrhage or hematoma rate | 2.50 | Same as national | 2035 |
| Postoperative acute kidney injury requiring dialysis rate | 1.42 | Same as national | 786 |
| Postoperative respiratory failure rate | 4.58 | Same as national | 795 |
| Perioperative pulmonary embolism or deep vein thrombosis rate | 3.01 | Same as national | 2289 |
| Postoperative sepsis rate | 2.76 | Same as national | 732 |
| Postoperative wound dehiscence rate | 1.83 | Same as national | 412 |
| Abdominopelvic accidental puncture or laceration rate | 0.71 | Same as national | 1838 |
| CMS Medicare PSI 90: Patient safety and adverse events composite | 0.80 | Same as national | — |
Unplanned Hospital Visits & Readmissions
lower is better · 14 measures reported
How often patients return to the hospital unexpectedly within 30 days of discharge — a marker of care quality and discharge planning.
| Measure | Score | Compared to national | Sample |
|---|---|---|---|
| Hospital return days for heart attack patients | -1 | Not available | 186 |
| Hospital return days for heart failure patients | 4.8 | Not available | 746 |
| Hospital return days for pneumonia patients | 23.4 | Not available | 641 |
| Hybrid Hospital-Wide All-Cause Readmission Measure (HWR) | 15.8 | Same as national | 4500 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies) | 11.5 | Same as national | 1299 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapy | — | Not available | — |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapy | — | Not available | — |
| Ratio of unplanned hospital visits after hospital outpatient surgery | 0.9 | Same as national | 767 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission Rate | 13.2 | Same as national | 186 |
| Rate of readmission for CABG | 9 | Same as national | 73 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patients | 20.5 | Same as national | 207 |
| Heart failure (HF) 30-Day Readmission Rate | 19.6 | Same as national | 746 |
| Rate of readmission after hip/knee replacement | 6 | Same as national | 115 |
| Pneumonia (PN) 30-Day Readmission Rate | 18.2 | Same as national | 641 |
Patient Experience (HCAHPS)
higher is better · 9 measures reported
What patients say about their hospital stay — communication with nurses and doctors, responsiveness, cleanliness, pain management, and whether they would recommend the hospital.
| Measure | Score | Sample |
|---|---|---|
| Nurse communication - star rating | 2 | 1372 |
| Doctor communication - star rating | 2 | 1372 |
| Communication about medicines - star rating | 1 | 1372 |
| Discharge information - star rating | 3 | 1372 |
| Cleanliness - star rating | 1 | 1372 |
| Quietness - star rating | 3 | 1372 |
| Overall hospital rating - star rating | 2 | 1372 |
| Recommend hospital - star rating | 3 | 1372 |
| Summary star rating | 2 | 1372 |
Timely & Effective Care
higher is better (unless a wait time) · 30 measures reported
How consistently hospitals follow recommended care processes — for example, giving heart-attack patients aspirin on arrival, or the average time spent in the emergency department.
| Measure | Score | Sample |
|---|---|---|
| Emergency department volume | very high | — |
| Global Malnutrition Composite Score | — | — |
| Global Malnutrition Composite Score: Malnutrition Diagnosis Documented | — | — |
| Global Malnutrition Composite Score: Malnutrition Risk Screening | — | — |
| Global Malnutrition Composite Score: Nutrition Assessment | — | — |
| Global Malnutrition Composite Score: Nutritional Care Plan | — | — |
| Hospital Harm - Severe Hyperglycemia | — | — |
| Hospital Harm - Severe Hypoglycemia | — | — |
| Hospital Harm - Opioid Related Adverse Events | — | — |
| Healthcare workers given influenza vaccination | 94 | 4289 |
| Average (median) time all patients spent in the emergency department before leaving from the visit, including psychiatric/mental health patients and patients who were transferred to another facility. A lower number of minutes is better | 254 | 445 |
| Average (median) time patients spent in the emergency department before leaving from the visit, excluding patients transferred to another facility or psychiatric care/mental health patients. A lower number of minutes is better | 246 | 409 |
| Average (median) time psychiatric/mental health patients spent in the emergency department before leaving from the visit. A lower number of minutes is better | 350 | 32 |
| Average (median) time patients spent in the emergency department before being transferred to another facility. A lower number of minutes is better | — | — |
| Left before being seen | 2 | 71451 |
| Head CT results | 94 | 17 |
| Endoscopy/polyp surveillance: appropriate follow-up interval for normal colonoscopy in average risk patients | 99 | 90 |
| Improvement in Patient's Visual Function within 90 Days Following Cataract Surgery | — | — |
| ST-Segment Elevation Myocardial Infarction (STEMI) | 100 | 30 |
| Safe Use of Opioids - Concurrent Prescribing | 20 | 10132 |
| Appropriate care for severe sepsis and septic shock | 64 | 379 |
| Septic Shock 3-Hour Bundle | 80 | 105 |
| Septic Shock 6-Hour Bundle | 97 | 64 |
| Severe Sepsis 3-Hour Bundle | 77 | 379 |
| Severe Sepsis 6-Hour Bundle | 89 | 183 |
| Discharged on Antithrombotic Therapy | 99 | 713 |
| Anticoagulation Therapy for Atrial Fibrillation/Flutter | — | — |
| Antithrombotic Therapy by End of Hospital Day 2 | — | — |
| Venous Thromboembolism Prophylaxis | 97 | 15326 |
| Intensive Care Unit Venous Thromboembolism Prophylaxis | 99 | 2748 |
Maternal Health
lower is better · 4 measures reported
Measures of maternal outcomes and safe delivery practices, including severe complications during childbirth.
| Measure | Score | Sample |
|---|---|---|
| Cesarean Birth | — | — |
| Risk Adjusted Severe Obstetric Complications (All) | — | — |
| Risk Adjusted Severe Obstetric Complications (excluding blood-transfusion-only cases) | — | — |
| Maternal Morbidity Structural Measure | Yes | — |
Frequently asked questions
- How is Mercy Hospital South rated?
- Mercy Hospital South has a 2 out of 5 CMS overall star rating as of the latest CMS release.
- Does Mercy Hospital South have emergency services?
- Yes. Mercy Hospital South operates a 24/7 emergency department.
- Where is Mercy Hospital South located?
- Mercy Hospital South is located at 10010 Kennerly Road, Saint Louis, MO 63128.
- What type of hospital is Mercy Hospital South?
- Mercy Hospital South is classified by CMS as a Acute Care Hospitals facility (Voluntary non-profit - Private).
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Data as of 2026-06-14. Source: CMS Provider Data Catalog. This is public data provided for informational purposes only and is not medical advice. See our methodology and editorial policy.