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Frontal Sinus Surgery With Bone Flap, Brow Incision

North Dakota rates for HCPCS 31086

An operation on the frontal sinus, the air space in the bone above the eyes, carried out through an incision at the brow rather than through the nostril. A section of the sinus wall is lifted as a hinged flap of bone so the surgeon can clear diseased lining and re-establish drainage, then the bone is laid back into place and the sinus is left open to drain.

Rates data updated October 2026.

How much does Frontal Sinus Surgery With Bone Flap, Brow Incision cost?

$2,188

Typical negotiated rate. In North Dakota, October 2026.

Insurers have agreed to pay about $2,188 for this service. The price depends on where it is billed: about $2,188 from a physician practice, and about $2,818 from a hospital or other facility.

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.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$2,188$1,862 to $2,512
FacilityA hospital or hospital-owned outpatient department$2,818$1,148 to $4,266

How much rates vary

Facilitymedian $2,818 · 10th to 90th $1,148 to $4,677Professionalmedian $2,188 · 10th to 90th $1,175 to $2,818
$1K$2K$5K$10K$20Kfacility $2,818professional $2,188

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

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$1,148.15
Median
$1,148.15
Typical High
$6,456.54
Aetna
Setting
Professional
Modifier
None
Typical Low
$1,148.15
Median
$1,148.15
Typical High
$1,348.96
BCBS North Dakota
Setting
Professional
Modifier
None
Typical Low
$1,862.09
Median
$2,398.83
Typical High
$2,818.38
BCBS North Dakota
Setting
Professional
Modifier
54 · Surgery only
Typical Low
$1,288.25
Median
$1,698.24
Typical High
$1,995.26
BCBS North Dakota
Setting
Professional
Modifier
56 · Pre-op care only
Typical Low
$186.21
Median
$239.88
Typical High
$281.84
BCBS North Dakota
Setting
Professional
Modifier
78 · Unplanned return to OR
Typical Low
$1,380.38
Median
$1,819.70
Typical High
$2,137.96
Cigna
Setting
Facility
Modifier
None
Typical Low
$1,995.26
Median
$1,995.26
Typical High
$2,290.87
Cigna
Setting
Professional
Modifier
None
Typical Low
$1,737.80
Median
$2,454.71
Typical High
$3,890.45
Medica
Setting
Facility
Modifier
None
Typical Low
$1,148.15
Median
$2,884.03
Typical High
$4,570.88
Medica
Setting
Professional
Modifier
None
Typical Low
$1,174.90
Median
$2,089.30
Typical High
$2,454.71
United
Setting
Facility
Modifier
None
Typical Low
$2,818.38
Median
$4,168.69
Typical High
$4,677.35
United
Setting
Professional
Modifier
None
Typical Low
$1,071.52
Median
$2,089.30
Typical High
$2,454.71
2 more rates with less common billing modifiers

A modifier changes what was billed, for example a reduced or repeated service. Each of these modifiers carries under 10% of the published rates for this code. Modifier combinations, and modifiers with fewer than 30 rates for a carrier, are not listed.

Insurance Carrier
BCBS North Dakota
Setting
Professional
Modifier
22 · Increased work
Typical Low
$2,238.72
Median
$2,884.03
Typical High
$3,388.44
BCBS North Dakota
Setting
Professional
Modifier
50 · Both sides
Typical Low
$2,818.38
Median
$3,630.78
Typical High
$4,265.80

Where North Dakota sits

The same service costs 6.9 times more in Alaska than in Texas. 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.

North Dakota· 12th of 51

$2,188

AK $4,786TX $692

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.