Screening colonoscopy cost in Chicago, IL
In Chicago-Naperville-Elgin, IL-IN, 18 hospitals list a cash price for screening colonoscopy for a person at average risk (Medicare code): from $157.29 to $3,200.55, with a median of $2,231.91. The lowest listed price is at Humboldt Park Health — $2,074.62 less than the median here. Across Illinois, the median is $2,529.90 at 30 hospitals.
- The median here, $2,231.91, is 35% above the US median of $1,658.13.
- That is 2.3× Medicare's 2026 national rate for the same service ($950.10).
- 1 of 18 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 18 facilities across 14 cities for code G0121, as an outpatient — the setting a self-pay patient normally buys. Collected Nov 10, 2026; the hospital files themselves were last updated between Jan 1, 2026 and Nov 5, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Chicago-Naperville-Elgin, IL-IN.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Humboldt Park Health lowest Chicago, IL · (773) 292-8200 COLORECTAL CANCER SCREENING; COLONOSCOPY ON INDIVIDUAL NOT MEETING CRITERIA FOR HIGH RISK File of Sep 29, 2026 · source file | $157.29 | $561.75 | $185.38–$1,499.35 | 72% |
| Morris Hospital Morris, IL · (815) 942-2932 COLORECTAL CANCER SCREENING; COLONOSCOPY ON INDIVIDUAL NOT MEETING CRITERIA FOR HIGH RISK File of Oct 27, 2026 · source file | $301.23 | $1,252.00 | $62.00–$1,289.56 | 76% |
| Loretto Hospital Chicago, IL · (773) 626-4300 PF COLON CANCER SCR NON-HR File of Nov 5, 2026 · source file | $310.40 | $517.33 | $310.40–$517.33 | 40% |
| John H. Stroger, Jr. Hospital Chicago, IL · (312) 864-6000 PF-COLON CA SCRN NOT HI RS File of Apr 1, 2026 · source file | $322.70 | $461.00 | $299.65–$507.35 | 30% |
| Saint Francis Hospital Evanston, IL · (847) 316-4000 HC COLORECTAL CANCER SCRN, COLONOSCOPY NOT HIGH RISK - G0121 - 75000071 File of Sep 1, 2026 · source file | $991.00 | $13,712.00 | $184.13–$11,380.96 | 93% |
| Loretto Hospital Chicago, IL · (773) 626-4300 COLON CANCER SCR NON-HR File of Nov 5, 2026 · source file | $1,283.96 | $2,139.93 | $1,283.96–$2,139.93 | 40% |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Colon Ca Scrn Not Hi Rsk Ind File of Jan 1, 2026 · source file | $1,642.90 | $7,713.15 | $153.27–$3,327.73 | 79% |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Colon ca scrn not hi rsk ind File of Jan 1, 2026 · source file | $1,785.40 | $6,920.15 | $6,865.15–$6,920.15 | 74% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Colon Ca Scrn Not Hi Rsk Ind File of Apr 1, 2026 · source file | $1,979.60 | $2,828.00 | $517.52–$2,828.00 | 30% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Colon Ca Scrn Not Hi Rsk Ind File of Apr 1, 2026 · source file | $2,146.20 | $3,066.00 | $582.54–$3,066.00 | 30% |
| Franciscan Health Rensselaer Rensselaer, IN · (219) 866-5141 Colon Ca Scrn Not Hi Rsk Ind File of Jan 1, 2026 · source file | $2,317.62 | $6,473.79 | $153.27–$4,106.00 | 64% |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Colorectal Cancer Screeningl Colonoscpy On Individual Not Meeting Criteria For High Risk-Pbb File of Apr 1, 2026 · source file | $2,502.00 | $2,502.00 | — | — |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Colon Ca Scrn Not Hi Rsk Ind File of Apr 1, 2026 · source file | $2,557.80 | $3,654.00 | $606.56–$3,654.00 | 30% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Colon Ca Scrn Not Hi Rsk Ind File of Apr 1, 2026 · source file | $2,557.80 | $3,654.00 | $705.22–$3,654.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Colon Ca Scrn Not Hi Rsk Ind File of Apr 1, 2026 · source file | $2,878.40 | $4,112.00 | $612.69–$4,112.00 | 30% |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Colon Ca Scrn Not Hi Rsk Ind File of Apr 1, 2026 · source file | $2,878.40 | $4,112.00 | $283.73–$4,112.00 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Colon Ca Scrn Not Hi Rsk Ind File of Apr 1, 2026 · source file | $3,198.30 | $4,569.00 | $731.04–$4,569.00 | 30% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Colon Ca Scrn Not Hi Rsk Ind File of Apr 1, 2026 · source file | $3,198.30 | $4,569.00 | $468.00–$4,112.00 | 30% |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 COLON CA SCRN NOT HI RSK IND File of Apr 1, 2026 · source file | $3,200.55 | $11,853.90 | $154.52–$9,957.28 | 73% |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Colorectal Cancer Screeningl Colonoscpy On Individual Not Meeting Criteria For High Risk File of Apr 1, 2026 · source file | $5,441.00 | $5,441.00 | — | — |
Outpatient: lowest $157.29, median $2,231.91, highest $3,200.55 — a 20.3× difference within the same market.
As an inpatient, the same code is billed by 3 facilities here, median $322.70. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 17 of 17 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 2 it is below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What screening colonoscopy is, what the price covers and why prices differ: Screening colonoscopy explained.