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CSTB Gene Test

Montana rates for HCPCS 81189

Looks for changes in the CSTB gene in a blood or saliva sample. Changes in this gene cause a rare inherited disorder that begins in childhood or the teenage years and brings muscle jerks, seizures, and worsening balance. Testing is used to confirm a suspected diagnosis or to check relatives.

Rates data updated July 2026.

How much does CSTB Gene Test cost?

$372

Typical negotiated rate. In Montana, July 2026.

Insurers have agreed to pay about $372 for this service. The price depends on where it is billed: about $347 from a physician practice, and about $417 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 6 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$347$316 to $537
FacilityA hospital or hospital-owned outpatient department$417$347 to $537

How much rates vary

Facilitymedian $417 · 10th to 90th $275 to $851Professionalmedian $347 · 10th to 90th $115 to $1,820
$200$500$1Kfacility $417professional $347

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
$316.23
Median
$316.23
Typical High
$1,819.70
BCBS
Setting
Professional
Modifier
Global
Typical Low
$371.54
Median
$371.54
Typical High
$371.54
Cigna
Setting
Facility
Modifier
Global
Typical Low
$398.11
Median
$467.74
Typical High
$1,548.82
Cigna
Setting
Professional
Modifier
Global
Typical Low
$128.82
Median
$128.82
Typical High
$398.11
MountainHealth Co-op
Setting
Facility
Modifier
Global
Typical Low
$275.42
Median
$371.54
Typical High
$831.76
MountainHealth Co-op
Setting
Professional
Modifier
Global
Typical Low
$275.42
Median
$371.54
Typical High
$831.76
Providence
Setting
Facility
Modifier
Global
Typical Low
$398.11
Median
$537.03
Typical High
$1,548.82
Providence
Setting
Professional
Modifier
Global
Typical Low
$245.47
Median
$245.47
Typical High
$436.52
United
Setting
Facility
Modifier
Global
Typical Low
$275.42
Median
$275.42
Typical High
$275.42
United
Setting
Professional
Modifier
Global
Typical Low
$114.82
Median
$114.82
Typical High
$275.42

Where Montana sits

The same service costs 3.3 times more in Alaska than in Delaware. 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.

Montana· 5th of 51

$372

AK $617DE $186

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.