Sigmoidoscopy cost in St. Louis, MO
In St. Louis, MO-IL, 7 hospitals list a cash price for flexible sigmoidoscopy, diagnostic (lower colon only): from $162.75 to $3,885.08, with a median of $1,035.45. The lowest listed price is at Mercy Hospitals East Communities and 1 other hospital — $872.70 less than the median here. Across Missouri, the median is $926.00 at 25 hospitals.
Cash prices at 7 facilities across 5 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 Jun 12, 2026 and Jun 12, 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 | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Mercy Hospitals East Communities lowest Washington, MO Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $162.75 | $217.00 | $86.80–$184.45 | 25% | Jun 12, 2026 source file |
| Mercy Hospital Lincoln lowest Elsberry, MO Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $162.75 | $217.00 | $86.80–$195.30 | 25% | Jun 12, 2026 source file |
| Mercy Hospital Lincoln lowest Elsberry, MO Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $162.75 | $217.00 | $86.80–$195.30 | 25% | Jun 12, 2026 source file |
| Mercy Hospital Lincoln lowest Elsberry, MO Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $162.75 | $217.00 | $86.80–$195.30 | 25% | Jun 12, 2026 source file |
| Mercy Hospital Lincoln lowest Elsberry, MO Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $162.75 | $217.00 | $86.80–$195.30 | 25% | Jun 12, 2026 source file |
| Mercy Hospital Lincoln lowest Elsberry, MO Sigmoidoscopy Flx Dx W/Collj Spec Br/Wa if Pfrmd | $162.75 | $217.00 | $86.80–$195.30 | 25% | Jun 12, 2026 source file |
| Mercy Hospital St Louis Saint Louis, MO Sigmoidoscopy Dx W/WO Spec Mlp | $327.60 | $504.00 | $777.21–$1,241.00 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO Sigmoidoscopy Dx W/WO Spec Pf | $385.45 | $593.00 | $913.76–$2,095.78 | 35% | — source file |
| Mercy Hospital Washington Washington, MO GI Sigmoidiscope Flexible | $1,035.45 | $1,593.00 | $1,047.00–$2,125.00 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 GI Sigmoidiscope Flexible | $1,338.35 | $2,059.00 | $133.84–$2,059.00 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO GI Sigmoidiscope Flexible | $1,430.00 | $2,200.00 | $1,089.00–$2,125.00 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 GI Sigmoidiscope Flexible | $1,433.25 | $2,205.00 | $1,081.00–$1,618.00 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO GI Sigmoidiscope Flexible | $3,885.08 | $5,977.05 | $91.52–$1,408.00 | 35% | — source file |
Outpatient: lowest $162.75, median $1,035.45, highest $3,885.08 — a 23.9× difference within the same market.
As an inpatient, the same code is billed by 2 facilities here, median $162.75. 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 6 of 7 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.