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Endoscopic Sinus Surgery, Total Ethmoidectomy

Montana rates for HCPCS 31257

Sinus surgery carried out through the nostrils with a thin telescope, so there are no cuts on the face. The surgeon opens up the honeycomb of small air cells between the eyes, front and back, taking away the thin walls between them so the sinuses can drain freely. It is done for long-standing sinus infection, polyps or blockage that medicines have not settled.

Rates data updated October 2026.

How much does Endoscopic Sinus Surgery, Total Ethmoidectomy cost?

$1,306

Typical total for the visit. In Montana, October 2026.

Insurers have agreed to pay about $1,306 for this procedure. That total is two separate charges: $646 to the doctor who performs it, and $661 to the hospital or surgery center where it takes place. Done somewhere without a facility charge, you pay only the first.

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 6 insurance carriers under federal price transparency rules.

What's inside this number

Part of the billTypicalRange
Physician feeThe doctor who performs it$646$447 to $708
Facility feeThe hospital or surgery center$661$646 to $813

How much rates vary

Facilitymedian $661 · 10th to 90th $646 to $3,981Professionalmedian $646 · 10th to 90th $79 to $776
$100$200$500$1K$2K$5K$10Kfacility $661professional $646

Distribution of negotiated rates across all payers (price axis is log-scale). Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Professional
Modifier
None
Typical Low
$389.05
Median
$398.11
Typical High
$575.44
BCBS Montana
Setting
Facility
Modifier
None
Typical Low
$7,244.36
Median
$7,244.36
Typical High
$7,244.36
BCBS Montana
Setting
Professional
Modifier
None
Typical Low
$630.96
Median
$691.83
Typical High
$691.83
Cigna
Setting
Facility
Modifier
None
Typical Low
$691.83
Median
$3,981.07
Typical High
$11,220.18
Cigna
Setting
Professional
Modifier
None
Typical Low
$691.83
Median
$691.83
Typical High
$691.83
MountainHealth Co-op
Setting
Facility
Modifier
None
Typical Low
$645.65
Median
$645.65
Typical High
$758.58
MountainHealth Co-op
Setting
Professional
Modifier
None
Typical Low
$416.87
Median
$645.65
Typical High
$691.83
Providence
Setting
Facility
Modifier
None
Typical Low
$691.83
Median
$3,981.07
Typical High
$11,220.18
Providence
Setting
Professional
Modifier
None
Typical Low
$79.43
Median
$602.56
Typical High
$707.95
United
Setting
Facility
Modifier
None
Typical Low
$1,479.11
Median
$2,884.03
Typical High
$4,570.88
United
Setting
Professional
Modifier
None
Typical Low
$660.69
Median
$758.58
Typical High
$1,047.13

Where Montana sits

The same service costs 8.9 times more in Colorado than in Montana. 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.

Physician feeFacility fee

Montana· 51st of 51

$1,306

$646 physician + $661 facility

CO $11,610MT $1,306

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.