Sigmoidoscopy cost in Chicago, IL — inpatient
In Chicago-Naperville-Elgin, IL-IN, 8 hospitals list a cash price for flexible sigmoidoscopy, diagnostic (lower colon only) as an inpatient: from $542.75 to $988.00, with a median of $728.38. The lowest listed price is at NorthShore University HealthSystems Glenbrook Hospital and 3 other hospitals — $185.63 less than the median here. Across Illinois, the median is $776.90 at 26 hospitals.
Cash prices at 8 facilities across 6 cities for code 45330, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 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 |
|---|---|---|---|---|---|
| NorthShore University HealthSystems Glenbrook Hospital lowest Glenview, IL Sigmoidoscopy Diagnostic | $542.75 | $835.00 | $136.11–$446.73 | 35% | — source file |
| NorthShore University HealthSystems Evanston Hospital lowest Evanson, IL · (847) 570-2000 Sigmoidoscopy Diagnostic | $542.75 | $835.00 | $136.11–$446.73 | 35% | — source file |
| NorthShore University HealthSystems Highland Park Hospital lowest Highland Park, IL Sigmoidoscopy Diagnostic | $542.75 | $835.00 | $136.11–$446.73 | 35% | — source file |
| NorthShore University HealthSystems Skokie Hospital lowest Skokie, IL Sigmoidoscopy Diagnostic | $542.75 | $835.00 | $136.11–$446.73 | 35% | — source file |
| Northshore University Healthsystem - Evanston Hospital Evanston, IL · (847) 570-2000 SIGMOIDOSCOPY,DIAGNOSTIC | $914.00 | $914.00 | — | — | 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 |
| 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 |
| 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 |
| 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 |
| 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 |
Inpatient: lowest $542.75, median $728.38, highest $988.00 — a 1.8× difference within the same market.
As an outpatient, the same code is billed by 21 facilities here, median $914.00 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 0 of 4 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it 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.