Illinois / St Marys Hospital
CMS certification 140166 · Decatur, IL
St Marys Hospital: charges and Medicare payments
St Marys Hospital reported 449 Medicare inpatient stays across 17 DRGs in 2024. Across them it charged 4.25 times what it was paid — mid-range in Illinois, number 49 of 106 hospitals with at least 100 stays (state median 4.06×, national 4.15×). Its most frequent stay was DRG 291, Heart Failure and Shock with MCC: 101 stays at an average charge of $37,073, 34% below the national average. It also billed 1,378 outpatient services, charging 6.52 times what Medicare paid.
- 1Medicare inpatient stays 449
- 2Charge ÷ paid, inpatient 4.25×
- 3Rank in IL (highest ratio = 1) 49 of 106
- 4CMS price-transparency actions 0
Inpatient stays
For the 17 DRGs that can be compared with the national average, St Marys Hospital charged more than the national average in 0 (0%). Payments follow Medicare's rates, so they usually vary far less than charges.
| DRG | Stays | Avg charge | vs US | Avg paid |
|---|---|---|---|---|
| 291 Heart Failure and Shock with MCC | 101 | $37,073 | -34% | $9,919 |
| 871 Septicemia or Severe Sepsis without MV >96 Hours with MCC | 92 | $56,815 | -37% | $14,169 |
| 189 Pulmonary Edema and Respiratory Failure | 35 | $43,604 | -24% | $9,086 |
| 193 Simple Pneumonia and Pleurisy with MCC | 27 | $42,693 | -29% | $10,610 |
| 177 Respiratory Infections and Inflammations with MCC | 23 | $50,551 | -28% | $11,694 |
| 194 Simple Pneumonia and Pleurisy with CC | 18 | $34,308 | -11% | $6,372 |
| 872 Septicemia or Severe Sepsis without MV >96 Hours without MCC | 18 | $39,603 | -19% | $8,159 |
| 689 Kidney and Urinary Tract Infections with MCC | 17 | $35,006 | -32% | $11,421 |
| 280 Acute Myocardial Infarction, Discharged Alive with MCC | 15 | $48,054 | -37% | $10,631 |
| 309 Cardiac Arrhythmia and Conduction Disorders with CC | 15 | $25,105 | -30% | $5,757 |
| 690 Kidney and Urinary Tract Infections without MCC | 15 | $34,804 | -8% | $6,180 |
| 190 Chronic Obstructive Pulmonary Disease with MCC | 14 | $46,322 | -8% | $8,231 |
| 308 Cardiac Arrhythmia and Conduction Disorders with MCC | 13 | $30,265 | -47% | $8,821 |
| 065 Intracranial Hemorrhage or Cerebral Infarction with CC or... | 12 | $45,295 | -19% | $7,495 |
| 683 Renal Failure with CC | 12 | $26,242 | -36% | $6,739 |
| 039 Extracranial Procedures without CC/MCC | 11 | $55,790 | -13% | $8,634 |
| 640 Miscellaneous Disorders of Nutrition, Metabolism, Fluids and... | 11 | $51,855 | -14% | $9,521 |
Outpatient services
Against the Illinois average
For Heart Failure and Shock with MCC (DRG 291), St Marys Hospital charged $37,073 on average, 20% less than the Illinois average of $46,293, and was paid $9,919 against a state average of $11,813. For Septicemia or Severe Sepsis without MV >96 Hours with MCC (DRG 871), St Marys Hospital charged $56,815 on average, 23% less than the Illinois average of $73,987, and was paid $14,169 against a state average of $17,651. For Pulmonary Edema and Respiratory Failure (DRG 189), St Marys Hospital charged $43,604 on average, 14% less than the Illinois average of $50,573, and was paid $9,086 against a state average of $11,480. For Simple Pneumonia and Pleurisy with MCC (DRG 193), St Marys Hospital charged $42,693 on average, 13% less than the Illinois average of $49,081, and was paid $10,610 against a state average of $11,857. For Level 1 Intraocular Procedures (outpatient APC 5491), its average charge of $11,091 was 26% below the state average of $14,917. For Level 1 Endovascular Procedures (outpatient APC 5191), its average charge of $20,046 was 20% below the state average of $25,004. For Comprehensive Observation Services (outpatient APC 8011), its average charge of $19,794 was 8% below the state average of $21,498. For Level 3 Endovascular Procedures (outpatient APC 5193), its average charge of $50,255 was 26% below the state average of $68,014.
Price-transparency record
No action in CMS's price-transparency enforcement list (July 2026) matches this hospital's exact name, city and state. That can mean CMS has not reviewed it, or that it is listed under a different name.
Charges are the hospital's list prices averaged over its 2024 Medicare cases; payments are what those cases actually brought in. Neither is what you will pay. For a planned procedure, ask the hospital for its price estimate or, if you are uninsured or self-paying, a good-faith estimate.
Sources: CMS Medicare Inpatient Hospitals — by Provider and Service / by Geography and Service, data year 2024; CMS Medicare Outpatient Hospitals — by Provider and Service / by Geography and Service, data year 2024; CMS Hospital Price Transparency Enforcement Activities and Outcomes, July 2026. Checked 2026-10-24. Methodology.