Illinois / Advocate Illinois Masonic Medical Center
CMS certification 140182 · Chicago, IL
Advocate Illinois Masonic Medical Center: charges and Medicare payments
Advocate Illinois Masonic Medical Center reported 1,087 Medicare inpatient stays across 45 DRGs in 2024. Across them it charged 3.43 times what it was paid — among the lower ratios in Illinois, number 74 of 106 hospitals with at least 100 stays (state median 4.06×, national 4.15×). Its most frequent stay was DRG 871, Septicemia or Severe Sepsis without MV >96 Hours with MCC: 142 stays at an average charge of $84,336, 7% below the national average. It also billed 2,194 outpatient services, charging 8.4 times what Medicare paid.
- 1Medicare inpatient stays 1,087
- 2Charge ÷ paid, inpatient 3.43×
- 3Rank in IL (highest ratio = 1) 74 of 106
- 4CMS price-transparency actions 0
Inpatient stays
For the 45 DRGs that can be compared with the national average, Advocate Illinois Masonic Medical Center charged more than the national average in 12 (27%). Payments follow Medicare's rates, so they usually vary far less than charges.
| DRG | Stays | Avg charge | vs US | Avg paid |
|---|---|---|---|---|
| 871 Septicemia or Severe Sepsis without MV >96 Hours with MCC | 142 | $84,336 | -7% | $23,895 |
| 291 Heart Failure and Shock with MCC | 111 | $58,260 | +3% | $17,117 |
| 640 Miscellaneous Disorders of Nutrition, Metabolism, Fluids and... | 40 | $55,838 | -7% | $16,683 |
| 853 Infectious and Parasitic Diseases with O.R. Procedures with... | 36 | $257,356 | +12% | $69,017 |
| 312 Syncope and Collapse | 34 | $48,216 | +6% | $11,280 |
| 064 Intracranial Hemorrhage or Cerebral Infarction with MCC | 31 | $100,001 | 0% | $26,856 |
| 177 Respiratory Infections and Inflammations with MCC | 30 | $63,311 | -10% | $22,929 |
| 872 Septicemia or Severe Sepsis without MV >96 Hours without MCC | 29 | $42,572 | -13% | $13,983 |
| 193 Simple Pneumonia and Pleurisy with MCC | 28 | $50,131 | -16% | $16,480 |
| 280 Acute Myocardial Infarction, Discharged Alive with MCC | 28 | $79,343 | +5% | $23,878 |
| 378 Gastrointestinal Hemorrhage with CC | 28 | $42,563 | -12% | $12,563 |
| 641 Miscellaneous Disorders of Nutrition, Metabolism, Fluids and... | 26 | $35,971 | -3% | $10,318 |
| 286 Circulatory Disorders except AMI, with Cardiac... | 25 | $136,681 | +22% | $28,246 |
| 481 Hip and Femur Procedures except Major Joint with CC | 25 | $103,443 | +3% | $23,454 |
| 552 Medical Back Problems without MCC | 23 | $35,585 | -27% | $11,790 |
| 189 Pulmonary Edema and Respiratory Failure | 22 | $46,320 | -20% | $15,581 |
| 377 Gastrointestinal Hemorrhage with MCC | 22 | $64,854 | -24% | $24,793 |
| 392 Esophagitis, Gastroenteritis and Miscellaneous Digestive... | 22 | $32,250 | -20% | $12,093 |
| 683 Renal Failure with CC | 22 | $49,734 | +22% | $17,275 |
| 057 Degenerative Nervous System Disorders without MCC | 19 | $46,520 | -18% | $17,565 |
| 314 Other Circulatory System Diagnoses with MCC | 19 | $75,174 | -21% | $23,830 |
| 690 Kidney and Urinary Tract Infections without MCC | 19 | $42,273 | +12% | $10,759 |
| 948 Signs and Symptoms without MCC | 18 | $32,331 | -15% | $10,736 |
| 082 Traumatic Stupor and Coma >1 Hour with MCC | 16 | $121,656 | +6% | $28,170 |
| 083 Traumatic Stupor and Coma >1 Hour with CC | 16 | $56,329 | -23% | $16,229 |
| 190 Chronic Obstructive Pulmonary Disease with MCC | 16 | $61,944 | +22% | $17,062 |
| 229 Other Cardiothoracic Procedures without MCC | 16 | $150,283 | -9% | $36,488 |
| 330 Major Small and Large Bowel Procedures with CC | 15 | $89,979 | -24% | $32,744 |
| 252 Other Vascular Procedures with MCC | 14 | $159,540 | -7% | $51,989 |
| 603 Cellulitis without MCC | 14 | $34,265 | -8% | $13,069 |
| 092 Other Disorders of Nervous System with CC | 13 | $44,991 | -13% | $12,379 |
| 101 Seizures without MCC | 13 | $51,687 | +6% | $12,063 |
| 175 Pulmonary Embolism with MCC or Acute Cor Pulmonale | 13 | $46,323 | -29% | $17,199 |
| 391 Esophagitis, Gastroenteritis and Miscellaneous Digestive... | 13 | $43,830 | -28% | $15,941 |
| 812 Red Blood Cell Disorders without MCC | 13 | $38,791 | -13% | $11,261 |
| 919 Complications of Treatment with MCC | 13 | $70,371 | -20% | $22,630 |
| 184 Major Chest Trauma with CC | 12 | $39,786 | -28% | $13,140 |
| 393 Other Digestive System Diagnoses with MCC | 12 | $47,464 | -38% | $17,879 |
| 480 Hip and Femur Procedures except Major Joint with MCC | 12 | $148,636 | +7% | $37,096 |
| 605 Trauma To The Skin, Subcutaneous Tissue and Breast without... | 12 | $31,108 | -33% | $11,255 |
| 065 Intracranial Hemorrhage or Cerebral Infarction with CC or... | 11 | $50,531 | -9% | $22,374 |
| 321 Percutaneous Cardiovascular Procedures with Intraluminal... | 11 | $153,511 | -6% | $36,650 |
| 435 Malignancy of Hepatobiliary System or Pancreas with MCC | 11 | $50,061 | -47% | $26,386 |
| 543 Pathological Fractures and Musculoskeletal and Connective... | 11 | $48,424 | -1% | $20,691 |
| 897 Alcohol, Drug Abuse or Dependence without Rehabilitation... | 11 | $36,355 | -2% | $10,948 |
Outpatient services
Against the Illinois average
For Septicemia or Severe Sepsis without MV >96 Hours with MCC (DRG 871), Advocate Illinois Masonic Medical Center charged $84,336 on average, 14% more than the Illinois average of $73,987, and was paid $23,895 against a state average of $17,651. For Heart Failure and Shock with MCC (DRG 291), Advocate Illinois Masonic Medical Center charged $58,260 on average, 26% more than the Illinois average of $46,293, and was paid $17,117 against a state average of $11,813. For Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC (DRG 640), Advocate Illinois Masonic Medical Center charged $55,838 on average, 19% more than the Illinois average of $46,822, and was paid $16,683 against a state average of $12,592. For Infectious and Parasitic Diseases with O.R. Procedures with MCC (DRG 853), Advocate Illinois Masonic Medical Center charged $257,356 on average, 40% more than the Illinois average of $183,276, and was paid $69,017 against a state average of $45,582. For Comprehensive Observation Services (outpatient APC 8011), its average charge of $22,037 was 3% above the state average of $21,498. For Level 1 Intraocular Procedures (outpatient APC 5491), its average charge of $11,077 was 26% below the state average of $14,917. For Level 2 Excision/ Biopsy/ Incision and Drainage (outpatient APC 5072), its average charge of $14,024 was 19% above the state average of $11,818. For Level 3 Excision/ Biopsy/ Incision and Drainage (outpatient APC 5073), its average charge of $25,432 was 14% above the state average of $22,245.
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.