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Open Surgery on the Forehead Sinus

Montana rates for HCPCS 31085

Open surgery to treat long-standing disease in the sinus behind the forehead. The surgeon makes an incision, lifts a section of the overlying bone as a hinged flap to reach the sinus, clears the cavity, and then sets the bone back and closes the wound. It is used when disease keeps returning after simpler drainage.

Rates data updated July 2026.

How much does Open Surgery on the Forehead Sinus cost?

$4,376

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

Insurers have agreed to pay about $4,376 for this procedure. That total is two separate charges: $2,188 to the doctor who performs it, and $2,188 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 5 insurance carriers under federal price transparency rules.

What's inside this number

Part of the billTypicalRange
Physician feeThe doctor who performs it$2,188$1,820 to $2,818
Facility feeThe hospital or surgery center$2,188$2,138 to $2,344

How much rates vary

Facilitymedian $2,188 · 10th to 90th $1,995 to $2,818Professionalmedian $2,188 · 10th to 90th $1,380 to $6,918
$100$200$500$1K$2K$5K$10Kfacility $2,188professional $2,188

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
Professional
Modifier
Global
Typical Low
$1,380.38
Median
$2,398.83
Typical High
$6,918.31
Cigna
Setting
Facility
Modifier
Global
Typical Low
$1,995.26
Median
$1,995.26
Typical High
$1,995.26
Cigna
Setting
Professional
Modifier
Global
Typical Low
$1,318.26
Median
$1,995.26
Typical High
$2,454.71
MountainHealth Co-op
Setting
Facility
Modifier
Global
Typical Low
$2,137.96
Median
$2,238.72
Typical High
$2,818.38
MountainHealth Co-op
Setting
Professional
Modifier
Global
Typical Low
$2,137.96
Median
$2,238.72
Typical High
$2,818.38
Providence
Setting
Facility
Modifier
Global
Typical Low
$1,122.02
Median
$1,995.26
Typical High
$2,454.71
Providence
Setting
Professional
Modifier
Global
Typical Low
$79.43
Median
$1,318.26
Typical High
$2,818.38
United
Setting
Facility
Modifier
Global
Typical Low
$1,445.44
Median
$1,445.44
Typical High
$12,022.64
United
Setting
Professional
Modifier
Global
Typical Low
$1,621.81
Median
$2,187.76
Typical High
$2,951.21

Where Montana sits

The same service costs 6.3 times more in Wyoming than in West Virginia. 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· 44th of 50

$4,376

$2,188 physician + $2,188 facility

WY $16,004WV $2,551

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.