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MERCY HOSPITAL SOUTH

SAINT LOUIS, MO 63128 · Acute Care Hospitals

135 procedures with CMS pricing data · Source: CMS IPPS Provider Summary, FY2024

By BillRazor Research · Last updated March 27, 2026 · Methodology

Procedures Analyzed

135

With CMS pricing data

Avg Charge-to-Medicare Ratio

4.1x

Chargemaster ÷ Medicare

CMS Quality Rating

Patient experience & outcomes

Hospital Type

Acute Care Hospitals

Voluntary non-profit - Private

Above 90th Percentile

0%

Compared to MO hospitals

Understanding Your Costs

When you receive a bill from MERCY HOSPITAL SOUTH, you are typically seeing the hospital's “chargemaster” rate — its published list price for each service. According to CMS data, MERCY HOSPITAL SOUTH lists chargemaster rates that average 4.1x the corresponding Medicare reimbursement amount across 135 procedures with publicly available pricing data (Source: CMS IPPS Provider Summary, FY2024).

The median hospital in MO has a chargemaster-to-Medicare ratio of 4.8x, with ratios across the state ranging from 0.9x to 12.7x. At 4.1x, this facility’s average ratio is below the state median. 62 hospitals in MO report pricing data to CMS (Source: CMS IPPS Provider Summary).

The procedure with the largest gap between the listed price and Medicare reimbursement at MERCY HOSPITAL SOUTH is PERCUTANEOUS CARDIOVASCULAR PROCEDURES WITH DRUG-ELUTING STENT WITHOUT MCC (DRG 247). The listed chargemaster rate is $77,910, while Medicare reimburses $10,725 for the same procedure — a ratio of 7.3x (Source: CMS IPPS Provider Summary, FY2024).

What does this actually mean for your bill? Chargemaster rates are rarely what patients pay. If you have insurance, your insurer has negotiated a separate rate — often 40–60% less than the listed price. If you are uninsured, you may be able to negotiate directly with the hospital or request financial assistance. The chargemaster-to-Medicare ratio is a useful reference point for understanding listed pricing, but it does not represent what most patients will owe out of pocket.

MERCY HOSPITAL SOUTH is a voluntary non-profit - private acute care hospitals facility with a CMS quality rating of 3/5 stars. Note: CMS quality ratings measure patient outcomes and experience, not pricing. A hospital with high listed prices may provide excellent care, and pricing data alone should not be used to evaluate the quality of a healthcare provider.

Listed Chargemaster Rates vs Medicare Reimbursement — Top Procedures by Ratio

Listed Chargemaster Rate Medicare Reimbursement

Source: CMS IPPS Provider Summary, FY2024. Chargemaster rates are list prices and may not reflect actual patient costs.

Procedure Pricing Lookup

Search for a specific procedure or DRG code to see listed chargemaster rates and Medicare reimbursement amounts.

ProcedureDRGListed ChargeMedicare Reimb.RatioState Position
PERCUTANEOUS CARDIOVASCULAR PROCEDURES WITH DRUG-ELUTING STENT WITHOUT MCC247$77,910$10,7257.3x
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INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITHOUT CC/MCC066$26,435$3,7427.1x
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ENDOCRINE DISORDERS WITH MCC643$59,560$8,5717.0x
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MAJOR CHEST TRAUMA WITH MCC183$61,532$8,9996.8x
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CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITHOUT CC/MCC310$18,016$2,6996.7x
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CIRRHOSIS AND ALCOHOLIC HEPATITIS WITH MCC432$65,990$10,2056.5x
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CIRCULATORY DISORDERS EXCEPT AMI, WITH CARDIAC CATHETERIZATION WITHOUT MCC287$38,919$6,0246.5x
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PERCUTANEOUS CARDIOVASCULAR PROCEDURES WITH DRUG-ELUTING STENT WITH MCC OR 4+ ARTERIES O246$115,495$18,0896.4x
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COAGULATION DISORDERS813$55,753$9,1816.1x
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TRANSIENT ISCHEMIA WITHOUT THROMBOLYTIC069$27,494$4,6615.9x
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PULMONARY EMBOLISM WITH MCC OR ACUTE COR PULMONALE175$47,596$8,3055.7x
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DIABETES WITH MCC637$45,849$8,6905.3x
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DISORDERS OF THE BILIARY TRACT WITH CC445$32,495$6,1805.3x
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ACUTE MYOCARDIAL INFARCTION, DISCHARGED ALIVE WITH CC281$26,871$5,1125.3x
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PNEUMOTHORAX WITH MCC199$57,069$11,0425.2x
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SIGNS AND SYMPTOMS WITHOUT MCC948$23,534$4,6085.1x
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SEPTICEMIA OR SEVERE SEPSIS WITH MV >96 HOURS870$254,867$50,1535.1x
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OTHER MULTIPLE SIGNIFICANT TRAUMA WITH CC964$39,943$7,9275.0x
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EXTRACRANIAL PROCEDURES WITH CC038$47,633$9,5715.0x
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CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITH CC309$21,224$4,2705.0x
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GASTROINTESTINAL HEMORRHAGE WITH CC378$29,037$5,8914.9x
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MAJOR CHEST TRAUMA WITH CC184$28,370$5,7624.9x
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DYSEQUILIBRIUM149$21,617$4,3934.9x
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LAPAROSCOPIC CHOLECYSTECTOMY WITHOUT C.D.E. WITH CC418$48,388$9,8914.9x
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MAJOR CHEST PROCEDURES WITH CC164$71,580$14,7614.8x
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INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITH CC OR TPA IN 24 HOURS065$28,076$5,8164.8x
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TRAUMATIC STUPOR AND COMA <1 HOUR WITH CC086$35,950$7,4804.8x
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TRACHEOSTOMY WITH MV >96 HOURS OR PRINCIPAL DIAGNOSIS EXCEPT FACE, MOUTH AND NECK WITHOU004$409,010$85,3884.8x
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MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITHOUT MCC641$20,675$4,3474.8x
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OTHER KIDNEY AND URINARY TRACT PROCEDURES WITH MCC673$119,609$25,2834.7x
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HYPERTENSION WITHOUT MCC305$19,842$4,1934.7x
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OTHER MAJOR CARDIOVASCULAR PROCEDURES WITH CC271$104,356$22,1144.7x
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BRONCHITIS AND ASTHMA WITH CC/MCC202$25,391$5,4624.7x
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SIGNS AND SYMPTOMS OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITHOUT MCC556$22,254$4,7984.6x
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SIMPLE PNEUMONIA AND PLEURISY WITH MCC193$35,960$7,8164.6x
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OTHER CIRCULATORY SYSTEM DIAGNOSES WITH CC315$25,621$5,5854.6x
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RESPIRATORY SYSTEM DIAGNOSIS WITH VENTILATOR SUPPORT <=96 HOURS208$74,437$16,2684.6x
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SIMPLE PNEUMONIA AND PLEURISY WITH CC194$21,869$4,7954.6x
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CIRCULATORY DISORDERS EXCEPT AMI, WITH CARDIAC CATHETERIZATION WITH MCC286$57,611$12,7084.5x
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SEIZURES WITHOUT MCC101$24,947$5,5554.5x
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CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITH CC191$19,730$4,4414.4x
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OTHER DISORDERS OF NERVOUS SYSTEM WITH CC092$27,616$6,2604.4x
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OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH CC565$26,504$6,0124.4x
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OTHER DIGESTIVE SYSTEM DIAGNOSES WITH MCC393$43,571$9,9034.4x
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CHEST PAIN313$18,948$4,3164.4x
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RED BLOOD CELL DISORDERS WITH MCC811$38,550$8,8054.4x
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CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITH MCC190$26,663$6,1014.4x
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DIABETES WITH CC638$22,061$5,0754.3x
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PULMONARY EDEMA AND RESPIRATORY FAILURE189$33,333$7,6634.3x
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SYNCOPE AND COLLAPSE312$23,102$5,3064.3x
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Showing 50 of 135 procedures

All data from CMS IPPS Provider Summary, FY2024. Chargemaster rates are list prices and may not reflect actual patient costs.

Statewide Context

Charge-to-Medicare ratio range across MO hospitals

0.9x
Median: 4.8x
12.7x
4.1x

62 hospitals in MO report pricing data to CMS. This facility's average ratio of 4.1x places it at the lower-middle range of the state range (Source: CMS IPPS Provider Summary).

What You Can Do

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Request an Itemized Bill

Federal law entitles you to a detailed breakdown of every charge. If you haven't received one, knowing what to ask for is the first step.

Learn how

Check for Common Errors

Research suggests 49-80% of hospital bills contain errors — from duplicate charges to incorrect procedure codes.

How it works

Data: CMS Inpatient Prospective Payment System (IPPS) Provider Summary, FY2024. All data is publicly available under federal law (45 CFR Part 180).

Important: Listed chargemaster rates are not what most insured patients pay. Actual costs depend on your insurance plan's negotiated rates, deductibles, and coverage terms. This information is for educational purposes only and does not constitute medical, legal, or financial advice.

Read our methodology·Report a data error

Frequently Asked Questions About MERCY HOSPITAL SOUTH

How much does MERCY HOSPITAL SOUTH charge compared to Medicare?

According to CMS IPPS data, MERCY HOSPITAL SOUTH's listed chargemaster rates average 4.1x the Medicare reimbursement amount across 135 procedures. Chargemaster rates are list prices and are not what most insured patients pay — actual costs depend on insurance negotiations and coverage terms.

What is the most expensive procedure at MERCY HOSPITAL SOUTH?

The procedure with the highest chargemaster-to-Medicare ratio at MERCY HOSPITAL SOUTH is PERCUTANEOUS CARDIOVASCULAR PROCEDURES WITH DRUG-ELUTING STENT WITHOUT MCC (DRG 247), with a listed charge of $77,910 compared to Medicare reimbursement of $10,725 — a ratio of 7.3x. Source: CMS IPPS Provider Summary.

Is MERCY HOSPITAL SOUTH expensive compared to other MO hospitals?

MERCY HOSPITAL SOUTH's average chargemaster-to-Medicare ratio is 4.1x. Ratios vary significantly across MO hospitals. This ratio reflects listed chargemaster prices, not what patients actually pay. CMS quality ratings, which measure patient outcomes and experience, are separate from pricing data.

Where does the pricing data for MERCY HOSPITAL SOUTH come from?

All pricing data comes from the Centers for Medicare & Medicaid Services (CMS) Inpatient Prospective Payment System (IPPS) Provider Summary, published under federal price transparency law (45 CFR Part 180). This data is publicly available and updated annually.

How can I check if my bill from MERCY HOSPITAL SOUTH is correct?

You can upload your bill to BillRazor for a free comparison against publicly available Medicare reimbursement data. Our system analyzes every line item in 60 seconds. Research suggests 49-80% of hospital bills contain errors, including duplicate charges, incorrect procedure codes, and unbundling.

Does MERCY HOSPITAL SOUTH in SAINT LOUIS, MO accept Medicare?

MERCY HOSPITAL SOUTH is included in the CMS IPPS Provider Summary, which covers Medicare-participating hospitals. For specific coverage questions, contact MERCY HOSPITAL SOUTH directly or check with your insurance provider.

Data sourced from CMS IPPS Provider Summary, FY2024. All information is for educational purposes only.