go back

CSTB Gene Test

Illinois 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?

$224

Typical negotiated rate. In Illinois, July 2026.

Insurers have agreed to pay about $224 for this service. The price depends on where it is billed: about $224 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 5 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$224$178 to $257
FacilityA hospital or hospital-owned outpatient department$417$282 to $562

How much rates vary

Facilitymedian $417 · 10th to 90th $224 to $759Professionalmedian $224 · 10th to 90th $3 to $468
$10$100$1Kfacility $417professional $224

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
$223.87
Median
$416.87
Typical High
$562.34
Aetna
Setting
Professional
Modifier
Global
Typical Low
$204.17
Median
$234.42
Typical High
$467.74
BCBS
Setting
Facility
Modifier
Global
Typical Low
$331.13
Median
$446.68
Typical High
$3,548.13
BCBS
Setting
Professional
Modifier
Global
Typical Low
$3.47
Median
$190.55
Typical High
$213.80
Cigna
Setting
Facility
Modifier
Global
Typical Low
$512.86
Median
$645.65
Typical High
$1,258.93
Cigna
Setting
Professional
Modifier
Global
Typical Low
$125.89
Median
$331.13
Typical High
$467.74
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$288.40
Median
$478.63
Typical High
$831.76
Hally Health
Setting
Facility
Modifier
Global
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$354.81
Median
$354.81
Typical High
$354.81
United
Setting
Facility
Modifier
Global
Typical Low
$275.42
Median
$275.42
Typical High
$549.54
United
Setting
Professional
Modifier
Global
Typical Low
$114.82
Median
$165.96
Typical High
$275.42

Where Illinois 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.

Illinois· 40th of 51

$224

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.