Balloon sinuplasty, maxillary cost in Chicago, IL
In Chicago-Naperville-Elgin, IL-IN, 6 hospitals list a cash price for balloon dilation of the maxillary sinus opening, one side: from $1,382.98 to $44,951.34, with a median of $15,867.11. The lowest listed price is at Humboldt Park Health — $14,484.13 less than the median here. Across Illinois, the median is $1,925.00 at 10 hospitals.
Cash prices at 6 facilities across 6 cities for code 31295, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 31, 2026 and Aug 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 Chicago-Naperville-Elgin, IL-IN.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Humboldt Park Health lowest Chicago, IL · (773) 292-8200 Dilation of nasal sinus using an endoscope | $1,382.98 | $4,939.20 | $4,939.20 | 72% | Aug 24, 2026 source file |
| Gottlieb Memorial Hospital one side Melrose Park, IL · (708) 681-3200 Sinus Endoscopy W/ Baln Dil Max Sinus Unilat | $1,541.28 | $8,112.00 | $2,198.35–$5,921.76 | 81% | Mar 31, 2026 source file |
| Loyola University Medical Center one side Maywood, IL · (708) 216-9000 Sinus Endoscopy W/ Baln Dil Max Sinus Unilat | $1,865.76 | $8,112.00 | $586.35–$10,607.70 | 77% | Mar 31, 2026 source file |
| Northwestern Medicine Kishwaukee Hospital DeKalb, IL · (815) 756-1521 Nasal/Sinus Ndsc Surg W/Dilation Maxillary Sinus | $29,868.45 | $42,669.21 | — | 30% | Apr 1, 2026 source file |
| Northwestern Medicine Central DuPage Hospital Winfield, IL · (630) 682-1600 Nasal/Sinus Ndsc Surg W/Dilation Maxillary Sinus | $37,891.64 | $54,130.91 | — | 30% | Apr 1, 2026 source file |
| Northwestern Lake Forest Hospital Lake Forest, IL · (847) 234-5600 Nasal/Sinus Ndsc Surg W/Dilation Maxillary Sinus | $44,951.34 | $64,216.20 | $7,923.00–$8,802.00 | 30% | Apr 1, 2026 source file |
| Gottlieb Memorial Hospital both sides Melrose Park, IL · (708) 681-3200 Sinus Endoscopy W/ Baln Dil Max Sinus Bilat | $2,311.92 | $12,168.00 | $3,297.53–$8,882.64 | 81% | Mar 31, 2026 source file |
| Loyola University Medical Center both sides Maywood, IL · (708) 216-9000 Sinus Endoscopy W/ Baln Dil Max Sinus Bilat | $2,798.64 | $12,168.00 | $586.35–$10,607.70 | 77% | Mar 31, 2026 source file |
Outpatient: lowest $1,382.98, median $15,867.11, highest $44,951.34 — a 32.5× difference within the same market.
Both sides : lowest $2,311.92, median $2,555.28, highest $2,798.64 — a 1.2× difference within the same market.
Cash or insurance?
At 3 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 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
In this endoscopic procedure a small balloon is passed through the nose and inflated to widen the natural opening of the maxillary (cheek) sinus. It is used for chronic or repeated sinusitis that does not improve with medicine.
What the price covers
The listed price usually covers the procedure for one side; the balloon device may be listed as a separate supply. The surgeon and any anesthesia are billed separately.