Sinus surgery, maxillary with tissue removal cost in Riverside, CA — inpatient
In Riverside-San Bernardino-Ontario, CA, 4 hospitals list a cash price for endoscopic sinus surgery: opening the maxillary sinus with removal of tissue as an inpatient: from $3,099.20 to $13,536.40, with a median of $3,099.20. The lowest listed price is at Kaiser Foundation Hospital - Fontana and 2 other hospitals. Across California, the median is $9,889.60 at 45 hospitals.
Cash prices at 4 facilities across 3 cities for code 31267, as an inpatient (admitted to hospital) . 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 Riverside-San Bernardino-Ontario, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Kaiser Foundation Hospital - Fontana lowest Fontana, CA · (909) 427-5000 NSL/SINUS NDSC MAX ANTROST W/RMVL TISS MAX SINUS | $3,099.20 | $5,960.00 | $6,867.00–$20,425.00 | 48% | — source file |
| Kaiser Foundation Hospital - Riverside lowest Riverside, CA · (951) 353-2000 NSL/SINUS NDSC MAX ANTROST W/RMVL TISS MAX SINUS | $3,099.20 | $5,960.00 | $6,867.00–$20,425.00 | 48% | — source file |
| Kaiser Foundation Hospital - Moreno Valley lowest Moreno Valley, CA · (951) 251-6530 NSL/SINUS NDSC MAX ANTROST W/RMVL TISS MAX SINUS | $3,099.20 | $5,960.00 | $6,867.00–$20,425.00 | 48% | — source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Nasal/Sinus Endoscopy, Surg W/Max Antrostomy Rmvl Tissue From Sinus | $13,536.40 | $13,536.40 | $259.49–$14,512.89 | — | — source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Nasal/Sinus Endoscopy, Surg W/Max Antrostomy Rmvl Tissue From Sinus | $13,536.40 | $13,536.40 | $259.49–$14,512.89 | — | — source file |
Inpatient: lowest $3,099.20, median $3,099.20, highest $13,536.40 — a 4.4× difference within the same market.
As an outpatient, the same code is billed by 4 facilities here, median $3,099.20 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 4 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 3 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
This code covers endoscopic surgery that widens the maxillary sinus opening and removes diseased tissue or polyps from inside the sinus.
What the price covers
The hospital price usually covers the operating room, recovery and supplies. The surgeon and anesthesia usually bill separately.