Sigmoidoscopy cost in Chicago, IL
In Chicago-Naperville-Elgin, IL-IN, 28 hospitals list a cash price for flexible sigmoidoscopy, diagnostic (lower colon only): from $104.30 to $4,532.32, with a median of $1,150.94. The lowest listed price is at John H. Stroger, Jr. Hospital — $1,046.64 less than the median here. Across Illinois, the median is $1,065.00 at 37 hospitals.
- The median here, $1,150.94, is 4% below the US median of $1,203.93.
- That is 1.2× Medicare's 2026 national rate for the same service ($950.10).
- 5 of 28 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 28 facilities across 20 cities for code 45330, as an outpatient — the setting a self-pay patient normally buys. Collected Oct 26, 2026; the hospital files themselves were last updated between Jan 1, 2025 and Sep 29, 2026.
Lowest$104.30John H. Stroger, Jr. Hospital
Median$1,150.94half of hospitals charge less
Highest$4,532.32in this market
Difference43.5×highest vs lowest
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.
median
Lowest $104.30Highest $4,532.32
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| John H. Stroger, Jr. Hospital lowest Chicago, IL · (312) 864-6000 PF-DIAGNOSTIC SIGMOIDOSCOPY File of Apr 1, 2026 · source file | $104.30 | $149.00 | $66.55–$177.62 | 30% |
| Humboldt Park Health Chicago, IL · (773) 292-8200 Diagnostic exam of lower portion of large bowel using a flexible endoscope File of Sep 29, 2026 · source file | $138.47 | $494.55 | $163.20–$519.28 | 72% |
| Gottlieb Memorial Hospital Melrose Park, IL · (708) 681-3200 Ca Screen Flex Sig+1 more line at this price File of Mar 31, 2026 · source file | $317.49 | $1,671.00 | $206.60–$2,252.00 | 81% |
| MacNeal Hospital Berwyn, IL · (708) 783-9100 Flex Sig Diag W/WO Spec+1 more line at this price File of Mar 31, 2026 · source file | $317.49 | $1,671.00 | $163.47–$1,248.00 | 81% |
| Loyola University Medical Center Maywood, IL · (708) 216-9000 Flex Sig Diag W/WO Spec+1 more line at this price File of Mar 31, 2026 · source file | $384.33 | $1,671.00 | $206.60–$4,183.00 | 77% |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC FLEX SIGMOIDOSCOPY File of Jan 1, 2026 · source file | $454.74 | $1,378.00 | $647.66 | 67% |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Sigmoidoscopy Diagnostic File of Jan 1, 2025 · source file | $542.75 | $835.00 | $112.73–$455.91 | 35% |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Sigmoidoscopy Diagnostic File of Jan 1, 2025 · source file | $542.75 | $835.00 | $112.73–$455.91 | 35% |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Apr 1, 2026 · source file | $639.80 | $914.00 | $167.26–$914.00 | 30% |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 SIGMOIDOSCOPY,DIAGNOSTIC File of Apr 1, 2026 · source file | $914.00 | $914.00 | — | — |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 SIGMOIDOSCOPY,DIAGNOSTIC File of Apr 1, 2026 · source file | $914.00 | $914.00 | — | — |
| Endeavor Health Highland Park Hospital Highland Park, IL SIGMOIDOSCOPY,DIAGNOSTIC File of Apr 1, 2026 · source file | $914.00 | $914.00 | — | — |
| Saint Francis Hospital Evanston, IL · (847) 316-4000 HC SIGMOIDOSCOPY,DIAGNOSTIC+2 more lines at this price File of Sep 1, 2026 · source file | $991.00 | $1,378.00 | $59.27–$4,892.85 | 28% |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Research Flex Sig Diagnostic File of Apr 1, 2026 · source file | $1,065.00 | $1,065.00 | — | — |
| Roseland Community Hospital Chicago, IL · (773) 995-3000 Diagnostic exam of lower portion of large bowel using a flexible endoscope File of Jul 1, 2026 · source file | $1,236.88 | $372.00 | $186.00–$1,236.88 | -232% |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Jan 1, 2026 · source file | $1,642.90 | $7,713.15 | $153.27–$3,327.73 | 79% |
| John H. Stroger, Jr. Hospital Chicago, IL · (312) 864-6000 DIAGNOSTIC SIGMOIDOSCOPY File of Apr 1, 2026 · source file | $1,663.20 | $2,376.00 | $66.55–$1,900.80 | 30% |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Jan 1, 2026 · source file | $1,773.01 | $6,872.15 | $6,872.15 | 74% |
| Jackson Park Hospital Foundation Chicago, IL · (773) 947-7500 SIGMOIDOSCOPY DIAGNOSTIC File of Dec 26, 2025 · source file | $1,805.12 | $2,256.40 | — | 20% |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Apr 1, 2026 · source file | $2,330.30 | $3,329.00 | $632.51–$3,329.00 | 30% |
| Franciscan Health Rensselaer Rensselaer, IN · (219) 866-5141 Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Jan 1, 2026 · source file | $2,629.05 | $7,343.72 | $1,242.31–$4,106.00 | 64% |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Apr 1, 2026 · source file | $2,705.50 | $3,865.00 | $745.95–$3,865.00 | 30% |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Apr 1, 2026 · source file | $2,705.50 | $3,865.00 | $641.59–$3,865.00 | 30% |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Sigmoidoscopy, Flex; Diag, Incl Collection Of Specimen By Brushing Or Washing, When Perf-Pbb File of Apr 1, 2026 · source file | $2,930.00 | $2,930.00 | — | — |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Apr 1, 2026 · source file | $2,993.90 | $4,277.00 | $295.11–$4,277.00 | 30% |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Apr 1, 2026 · source file | $2,993.90 | $4,277.00 | $637.27–$4,277.00 | 30% |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 DIAGNOSTIC SIGMOIDOSCOPY File of Apr 1, 2026 · source file | $3,034.32 | $11,238.22 | $50.08–$9,440.10 | 73% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Apr 1, 2026 · source file | $3,103.10 | $4,433.00 | $213.88–$4,433.00 | 30% |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Apr 1, 2026 · source file | $3,326.40 | $4,752.00 | $760.32–$4,752.00 | 30% |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Sigmoidoscopy, Flex; Diag, Incl Collection Of Specimen By Brushing Or Washing, When Perf File of Apr 1, 2026 · source file | $3,804.00 | $3,804.00 | — | — |
| Franciscan Health Dyer Dyer, IN · (219) 865-2141 Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd File of Jan 1, 2026 · source file | $4,532.32 | $16,786.36 | $983.90–$3,133.48 | 73% |
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More
Off list How much lower the cash price is than the list price.
At or below Medicare This cash price is at or below what Medicare pays a hospital for the same service, which is unusually low. It is what the hospital's file says; confirm it and what it includes before booking. More
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
Outpatient: lowest $104.30, median $1,150.94, highest $4,532.32 — a 43.5× difference within the same market.
As an inpatient, the same code is billed by 8 facilities here, median $914.00. 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 19 of 23 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 3 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 sigmoidoscopy is, what the price covers and why prices differ: Sigmoidoscopy explained.
1 row held back from this comparison
It is priced below $1 or below a tenth of the national median for code 45330 ($965.10). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Hospital | Cash price | File |
|---|---|---|
| Morris Hospital Morris, ILDiagnostic exam of lower portion of large bowel using a flexible endoscope | $41.14 | file |
File Link to the hospital's own price file.