Sigmoidoscopy cost in Chicago, IL
In Chicago-Naperville-Elgin, IL-IN, 21 hospitals list a cash price for flexible sigmoidoscopy, diagnostic (lower colon only): from $138.47 to $3,326.40, with a median of $914.00. The lowest listed price is at Humboldt Park Health — $775.53 less than the median here. Across Illinois, the median is $776.90 at 26 hospitals.
Cash prices at 21 facilities across 15 cities for code 45330, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 31, 2026 and Sep 1, 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 | File date |
|---|---|---|---|---|---|
| Humboldt Park Health lowest Chicago, IL · (773) 292-8200 Diagnostic exam of lower portion of large bowel using a flexible endoscope | $138.47 | $494.55 | $494.55 | 72% | Aug 24, 2026 source file |
| Gottlieb Memorial Hospital Melrose Park, IL · (708) 681-3200 Ca Screen Flex Sig | $317.49 | $1,671.00 | $206.60–$2,252.00 | 81% | Mar 31, 2026 source file |
| Gottlieb Memorial Hospital Melrose Park, IL · (708) 681-3200 Flex Sig Diag W/WO Spec | $317.49 | $1,671.00 | $452.84–$1,219.83 | 81% | Mar 31, 2026 source file |
| Loyola University Medical Center Maywood, IL · (708) 216-9000 Ca Screen Flex Sig | $384.33 | $1,671.00 | $206.60–$4,183.00 | 77% | Mar 31, 2026 source file |
| Loyola University Medical Center Maywood, IL · (708) 216-9000 Flex Sig Diag W/WO Spec | $384.33 | $1,671.00 | $206.60–$4,183.00 | 77% | Mar 31, 2026 source file |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC FLEX SIGMOIDOSCOPY | $454.74 | $1,378.00 | $647.66 | 67% | — source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Sigmoidoscopy Diagnostic | $542.75 | $835.00 | $112.73–$455.91 | 35% | — source file |
| NorthShore University HealthSystems Evanston Hospital Evanson, IL · (847) 570-2000 Sigmoidoscopy Diagnostic | $542.75 | $835.00 | $112.73–$455.91 | 35% | — source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Sigmoidoscopy Diagnostic | $542.75 | $835.00 | $112.73–$455.91 | 35% | — source file |
| NorthShore University HealthSystems Highland Park Hospital Highland Park, IL Sigmoidoscopy Diagnostic | $542.75 | $835.00 | $112.73–$455.91 | 35% | — source file |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $639.80 | $914.00 | $167.26–$914.00 | 30% | Apr 1, 2026 source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 SIGMOIDOSCOPY,DIAGNOSTIC | $914.00 | $914.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Clinical Operations Highland Park, IL SIGMOIDOSCOPY,DIAGNOSTIC | $914.00 | $914.00 | — | — | Apr 1, 2026 source file |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 SIGMOIDOSCOPY,DIAGNOSTIC | $914.00 | $914.00 | — | — | Apr 1, 2026 source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Pr Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa If Pfrmd-Pbb | $988.00 | $988.00 | — | — | Apr 1, 2026 source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Pr Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa If Pfrmd-Gast | $988.00 | $988.00 | — | — | Apr 1, 2026 source file |
| Saint Francis Hospital Evanston, IL · (847) 316-4000 Diagnostic sigmoidoscopy | $991.00 | $5,681.00 | $59.27–$4,892.85 | 83% | Sep 1, 2026 source file |
| Saint Francis Hospital Evanston, IL · (847) 316-4000 HC SIGMOIDOSCOPY,DIAGNOSTIC | $991.00 | $1,378.00 | $59.27–$4,892.85 | 28% | Sep 1, 2026 source file |
| Saint Francis Hospital Evanston, IL · (847) 316-4000 HC COLORECTAL CANCER SCREEN, FLEX SIGMOIDSCOPE - 45330 - 75000067 | $991.00 | $5,895.00 | $59.27–$4,892.85 | 83% | Sep 1, 2026 source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Research Flex Sig Diagnostic | $1,065.00 | $1,065.00 | — | — | Apr 1, 2026 source file |
| Roseland Community Hospital Association Chicago, IL · (773) 995-3000 Diagnostic exam of lower portion of large bowel using a flexible endoscope | $1,236.88 | $372.00 | $186.00–$1,236.88 | -232% | Jul 1, 2026 source file |
| Northwestern Medicine Valley West Hospital Sandwich, IL · (815) 786-8484 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $2,330.30 | $3,329.00 | $632.51–$3,329.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine McHenry Hospital McHenry, IL · (815) 344-5000 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $2,705.50 | $3,865.00 | $745.95–$3,865.00 | 30% | Apr 1, 2026 source file |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $2,705.50 | $3,865.00 | $641.59–$3,865.00 | 30% | Apr 1, 2026 source file |
| 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 | $2,930.00 | $2,930.00 | — | — | Apr 1, 2026 source file |
| Northwestern Medicine Delnor Hospital Geneva, IL · (630) 208-3000 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $2,993.90 | $4,277.00 | $637.27–$4,277.00 | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $2,993.90 | $4,277.00 | $295.11–$4,277.00 | 30% | Apr 1, 2026 source file |
| Palos Community Hospital Palos Heights, IL · (708) 923-4000 HB Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $3,326.40 | $4,752.00 | $760.32–$4,752.00 | 30% | Apr 1, 2026 source file |
| 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 | $3,804.00 | $3,804.00 | — | — | Apr 1, 2026 source file |
Outpatient: lowest $138.47, median $914.00, highest $3,326.40 — a 24.0× difference within the same market.
As an inpatient, the same code is billed by 8 facilities here, median $728.38. 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 12 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 it is
A flexible sigmoidoscopy uses a thin camera to look at the rectum and the lower part of the colon, not the whole colon. It is used to check symptoms like bleeding or changes in bowel habits, and sometimes for screening.
What the price covers
The listed price usually covers the procedure. The doctor's fee may be billed separately, and a biopsy or polyp removal changes the code and adds pathology.