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Unlisted Surgical Procedure On The Sinuses

California rates for HCPCS 31299

Covers an operation on the paranasal sinuses — the air-filled spaces in the bones around the nose and eyes — that has no standard named entry of its own. It is used when the surgery performed does not match any established named sinus procedure, and the surgeon provides a written description of what was done.

Rates data updated July 2026.

How much does Unlisted Surgical Procedure On The Sinuses cost?

$6,026

Typical negotiated rate. In California, July 2026.

Insurers have agreed to pay about $6,026 for this service. The price depends on where it is billed: about $5,623 from a physician practice, and about $6,026 from a hospital or other facility. The two figures are alternatives, not parts of one bill.

These are rates insurers have negotiated with providers, not the amount a patient is billed. What you owe depends on your plan's deductible and coinsurance. Based on rates published by 7 insurance carriers under federal price transparency rules.

Where it's billed changes the price

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$5,623$4,467 to $8,128
FacilityA hospital or hospital-owned outpatient department$6,026$3,020 to $11,220

How much rates vary

Facilitymedian $6,026 · 10th to 90th $589 to $19,055Professionalmedian $5,623 · 10th to 90th $1,349 to $12,589
$100$500$2K$10Kfacility $6,026professional $5,623

Distribution of negotiated rates across all payers (price axis is log-scale). Each curve is scaled to its own total: facility and professional rates are different services, shown together to compare where they cluster. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$4,897.79
Median
$10,715.19
Typical High
$25,703.96
Aetna
Setting
Professional
Modifier
Global
Typical Low
$1,348.96
Median
$5,623.41
Typical High
$12,589.25
Anthem BCBS
Setting
Facility
Modifier
Global
Typical Low
$1,548.82
Median
$3,090.30
Typical High
$10,964.78
Blue Shield
Setting
Facility
Modifier
Global
Typical Low
$74.13
Median
$3,162.28
Typical High
$6,760.83
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$141.25
Median
$398.11
Typical High
$1,698.24
Lucent Health
Setting
Facility
Modifier
Global
Typical Low
$54.95
Median
$56.23
Typical High
$56.23
Providence
Setting
Professional
Modifier
Global
Typical Low
$79.43
Median
$79.43
Typical High
$79.43
United
Setting
Facility
Modifier
Global
Typical Low
$575.44
Median
$1,584.89
Typical High
$6,456.54

Where California sits

The same service costs 416.9 times more in Wisconsin than in Hawaii. Every bar is a state, most expensive first. Touch or drag across it to read any state, then open that state for its carriers and full range.

California· 8th of 49

$6,026

WI $12,303HI $29.51

Median negotiated rate in each state, from every insurer that publishes one. States where no insurer publishes a rate for this service are not shown.