Colonoscopy, diagnostic in St. Louis, MO-IL
In St. Louis, MO-IL, 6 hospitals list a cash price for Colonoscopy, diagnostic: from $820.30 to $3,190.85, with a median of $1,351.35. The lowest listed price is at Mercy Hospitals East Communities dba Mercy Hospital St Louis.
Cash prices at 6 facilities across 5 cities for code 45378, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 24, 2026 and Apr 24, 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 St. Louis, MO-IL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Off list | File date |
|---|---|---|---|---|
| Mercy Hospitals East Communities dba Mercy Hospital St Louis lowest Saint Louis, MO Colonoscopy Diagnostic Mlp | $820.30 | $1,262.00 | 35% | — source file |
| Ranken Jordan Home for Convalescent Crippled Children Hospital Maryland Heights, MO Colonoscopy w/out biopsy | $897.60 | $1,122.00 | 20% | Apr 24, 2026 source file |
| Mercy Hospitals East Communities dba Mercy Hospital St Louis Saint Louis, MO Colonoscopy Diagnostic Pf | $965.25 | $1,485.00 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO GI Colonoscopy | $1,115.40 | $1,716.00 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO GI Colonoscopy | $1,587.30 | $2,442.00 | 35% | — source file |
| Mercy Hospitals East Communities dba Mercy Hospital Washington Washington, MO GI Colonoscopy | $2,801.36 | $4,309.79 | 35% | — source file |
| Mercy Hospitals East Communities dba Mercy Hospital St Louis Saint Louis, MO GI Colonoscopy | $2,899.66 | $4,461.01 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO GI Colonoscopy | $3,190.85 | $4,909.00 | 35% | — source file |
Outpatient: lowest $820.30, median $1,351.35, highest $3,190.85 — a 3.9× difference within the same market.
As an inpatient, the same code is billed by 1 facility here, median $897.60. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
What it is
A colonoscopy uses a long, flexible camera to look at the inside of the entire colon (large intestine). The diagnostic version, with no tissue taken, is used to look into symptoms like bleeding or changes in bowel habits and is also used for screening.
What the price covers
The facility price covers the procedure room and recovery. The gastroenterologist's fee, anesthesia and the bowel-prep medicine are usually billed or bought separately.