Endoscopic cyst drainage cost in St. Louis, MO
In St. Louis, MO-IL, 3 hospitals list a cash price for upper endoscopy with drainage of a pseudocyst through the stomach wall: from $5,151.05 to $15,610.29, with a median of $10,336.80. The lowest listed price is at Mercy Hospital St Louis — $5,185.75 less than the median here. Across Missouri, the median is $5,151.05 at 7 hospitals.
Cash prices at 3 facilities across 2 cities for code 43240, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between — and —.
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 Hospital St Louis lowest Saint Louis, MO Egd Transoral Transmural Drainage Pseudocyst | $5,151.05 | $7,924.69 | $333.33–$6,597.06 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 Egd Transoral Transmural Drainage Pseudocyst | $10,336.80 | $15,902.77 | $333.33–$6,597.06 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Egd Transoral Transmural Drainage Pseudocyst | $15,610.29 | $24,015.83 | $325.25–$6,444.82 | 35% | — source file |
Outpatient: lowest $5,151.05, median $10,336.80, highest $15,610.29 — a 3.0× difference within the same market.
Cash or insurance?
At 1 of 3 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
This code covers an advanced upper endoscopy in which a fluid collection next to the stomach, usually after pancreatitis, is drained through the stomach wall with a stent.
What the price covers
The facility price covers the endoscopy room, equipment and recovery. The doctor, sedation and any lab exam of tissue are usually billed separately.