Northwestern Medicine Mchenry Hospital: charges and Medicare payments

Northwestern Medicine Mchenry Hospital reported 6,249 Medicare inpatient stays across 147 DRGs in 2024. Across them it charged 4.71 times what it was paid — among the higher ratios in Illinois, number 31 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: 621 stays at an average charge of $71,758, 21% below the national average. It also billed 4,508 outpatient services, charging 9.04 times what Medicare paid.

1Medicare inpatient stays 6,249
2Charge ÷ paid, inpatient 4.71×
3Rank in IL (highest ratio = 1) 31 of 106
4CMS price-transparency actions 0

Average charge per stay at Northwestern Medicine Mchenry Hospital, its 10 most frequent DRGs, bars to scale. Source: CMS DY2024.

Inpatient stays

For the 147 DRGs that can be compared with the national average, Northwestern Medicine Mchenry Hospital charged more than the national average in 16 (11%). 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	621	$71,758	-21%	$16,141
291 Heart Failure and Shock with MCC	446	$51,056	-9%	$10,364
177 Respiratory Infections and Inflammations with MCC	223	$60,835	-14%	$13,778
872 Septicemia or Severe Sepsis without MV >96 Hours without MCC	117	$39,125	-20%	$9,225
683 Renal Failure with CC	116	$38,523	-5%	$7,186
189 Pulmonary Edema and Respiratory Failure	115	$50,675	-12%	$11,397
392 Esophagitis, Gastroenteritis and Miscellaneous Digestive...	109	$37,769	-6%	$7,402
682 Renal Failure with MCC	109	$57,077	-13%	$13,014
193 Simple Pneumonia and Pleurisy with MCC	95	$48,582	-19%	$13,289
689 Kidney and Urinary Tract Infections with MCC	95	$41,329	-19%	$9,222
690 Kidney and Urinary Tract Infections without MCC	92	$36,185	-4%	$6,771
378 Gastrointestinal Hemorrhage with CC	91	$47,894	-1%	$8,487
481 Hip and Femur Procedures except Major Joint with CC	87	$95,078	-6%	$16,811
064 Intracranial Hemorrhage or Cerebral Infarction with MCC	82	$77,228	-23%	$15,263
698 Other Kidney and Urinary Tract Diagnoses with MCC	80	$54,436	-26%	$14,553
853 Infectious and Parasitic Diseases with O.R. Procedures with...	79	$170,158	-26%	$38,363
885 Psychoses	79	$37,952	-14%	$11,533
178 Respiratory Infections and Inflammations with CC	76	$44,362	-2%	$8,022
377 Gastrointestinal Hemorrhage with MCC	73	$71,266	-17%	$14,263
640 Miscellaneous Disorders of Nutrition, Metabolism, Fluids and...	71	$49,906	-17%	$11,935
194 Simple Pneumonia and Pleurisy with CC	68	$36,395	-5%	$7,744
065 Intracranial Hemorrhage or Cerebral Infarction with CC or...	67	$54,349	-2%	$7,912
309 Cardiac Arrhythmia and Conduction Disorders with CC	67	$35,306	-2%	$6,509
274 Percutaneous and Other Intracardiac Procedures without MCC	60	$128,678	-18%	$26,134
190 Chronic Obstructive Pulmonary Disease with MCC	59	$40,410	-20%	$8,928
543 Pathological Fractures and Musculoskeletal and Connective...	59	$43,407	-11%	$8,454
266 Endovascular Cardiac Valve Replacement and Supplement...	58	$237,959	-16%	$47,416
552 Medical Back Problems without MCC	58	$42,315	-13%	$8,383
389 Gastrointestinal Obstruction with CC	57	$34,711	-11%	$6,714
603 Cellulitis without MCC	57	$30,044	-19%	$8,474
057 Degenerative Nervous System Disorders without MCC	53	$43,503	-23%	$10,758
286 Circulatory Disorders except AMI, with Cardiac...	52	$95,634	-15%	$18,029
391 Esophagitis, Gastroenteritis and Miscellaneous Digestive...	51	$46,810	-23%	$11,769
699 Other Kidney and Urinary Tract Diagnoses with CC	50	$38,940	-18%	$8,480
191 Chronic Obstructive Pulmonary Disease with CC	49	$33,872	-15%	$6,829
202 Bronchitis and Asthma with CC/MCC	49	$36,799	-20%	$8,332
280 Acute Myocardial Infarction, Discharged Alive with MCC	49	$81,492	+7%	$16,252
641 Miscellaneous Disorders of Nutrition, Metabolism, Fluids and...	49	$35,725	-4%	$6,227
056 Degenerative Nervous System Disorders with MCC	47	$74,571	-22%	$19,258
308 Cardiac Arrhythmia and Conduction Disorders with MCC	43	$42,790	-24%	$10,554
322 Percutaneous Cardiovascular Procedures with Intraluminal...	43	$111,257	-3%	$18,518
480 Hip and Femur Procedures except Major Joint with MCC	43	$128,351	-7%	$27,449
287 Circulatory Disorders except AMI, with Cardiac...	42	$65,863	+3%	$10,379
305 Hypertension without MCC	42	$36,092	-10%	$6,831
312 Syncope and Collapse	42	$40,369	-11%	$7,127
522 Hip Replacement with Principal Diagnosis of Hip Fracture...	40	$98,157	-4%	$17,676
393 Other Digestive System Diagnoses with MCC	39	$64,377	-16%	$12,947
208 Respiratory System Diagnosis with Ventilator Support <=96...	36	$117,331	-14%	$22,089
314 Other Circulatory System Diagnoses with MCC	36	$68,654	-28%	$17,559
329 Major Small and Large Bowel Procedures with MCC	36	$150,707	-30%	$33,948
470 Major Hip and Knee Joint Replacement or Reattachment of...	36	$88,270	-5%	$16,596
175 Pulmonary Embolism with MCC or Acute Cor Pulmonale	35	$65,459	0%	$11,088
643 Endocrine Disorders with MCC	35	$57,047	-23%	$13,927
394 Other Digestive System Diagnoses with CC	34	$40,677	-14%	$11,759
542 Pathological Fractures and Musculoskeletal and Connective...	33	$57,974	-27%	$12,908
321 Percutaneous Cardiovascular Procedures with Intraluminal...	32	$138,625	-15%	$26,622
176 Pulmonary Embolism without MCC	31	$38,042	-8%	$7,546
467 Revision of Hip or Knee Replacement with CC	31	$141,746	-10%	$25,310
673 Other Kidney and Urinary Tract Procedures with MCC	31	$89,753	-48%	$28,781
813 Coagulation Disorders	31	$53,571	-33%	$12,365

Showing the 60 most frequent of 147 DRGs.

Outpatient services

Service (APC)	Services	Avg charge	Medicare allowed
Comprehensive Observation Services	1,222	$25,534	$2,576
Level 5 Musculoskeletal Procedures	383	$72,483	$12,392
Level 2 Excision/ Biopsy/ Incision and Drainage	302	$16,326	$1,530
Level 1 Endovascular Procedures	230	$35,430	$3,089
Level 3 Vascular Procedures	211	$19,814	$2,355
Level 3 Urology and Related Services	167	$20,167	$1,876
Level 1 Intraocular Procedures	165	$14,521	$2,170
Level 2 Urology and Related Services	161	$5,283	$649
Level 1 Laparoscopy and Related Services	142	$48,264	$5,478
Level 5 Urology and Related Services	124	$42,530	$4,913
Level 1 Nerve Procedures	120	$13,895	$1,806
Level 2 Upper GI Procedures	116	$19,589	$1,762
Level 3 Excision/ Biopsy/ Incision and Drainage	99	$25,640	$2,545
Level 3 Musculoskeletal Procedures	95	$28,608	$2,899
Level 4 Musculoskeletal Procedures	92	$57,268	$6,718
Level 4 Urology and Related Services	87	$30,215	$3,280
Level 3 Electrophysiologic Procedures	80	$103,341	$22,490
Level 3 Endovascular Procedures	68	$76,429	$10,305
Level 4 Airway Endoscopy	56	$27,269	$3,505
Level 2 Vascular Procedures	50	$11,914	$1,505
Level 2 Musculoskeletal Procedures	48	$14,624	$1,526
Level 3 Airway Endoscopy	44	$11,039	$1,611
Level 4 Endovascular Procedures	44	$78,125	$16,236
Level 1 Breast/Lymphatic Surgery and Related Procedures	37	$33,637	$3,619
Level 5 Airway Endoscopy	36	$45,604	$6,354

Against the Illinois average

For Septicemia or Severe Sepsis without MV >96 Hours with MCC (DRG 871), Northwestern Medicine Mchenry Hospital charged $71,758 on average, 3% less than the Illinois average of $73,987, and was paid $16,141 against a state average of $17,651. For Heart Failure and Shock with MCC (DRG 291), Northwestern Medicine Mchenry Hospital charged $51,056 on average, 10% more than the Illinois average of $46,293, and was paid $10,364 against a state average of $11,813. For Respiratory Infections and Inflammations with MCC (DRG 177), Northwestern Medicine Mchenry Hospital charged $60,835 on average, 2% more than the Illinois average of $59,769, and was paid $13,778 against a state average of $14,404. For Septicemia or Severe Sepsis without MV >96 Hours without MCC (DRG 872), Northwestern Medicine Mchenry Hospital charged $39,125 on average, 5% less than the Illinois average of $41,000, and was paid $9,225 against a state average of $9,886. For Comprehensive Observation Services (outpatient APC 8011), its average charge of $25,534 was 19% above the state average of $21,498. For Level 5 Musculoskeletal Procedures (outpatient APC 5115), its average charge of $72,483 was 8% above the state average of $67,146. For Level 2 Excision/ Biopsy/ Incision and Drainage (outpatient APC 5072), its average charge of $16,326 was 38% above the state average of $11,818. For Level 1 Endovascular Procedures (outpatient APC 5191), its average charge of $35,430 was 42% above the state average of $25,004.

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.