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CSTB Gene Test

Massachusetts 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?

$275

Typical negotiated rate. In Massachusetts, July 2026.

Insurers have agreed to pay about $275 for this service. The price depends on where it is billed: about $275 from a physician practice, and about $380 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 8 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$275$224 to $275
FacilityA hospital or hospital-owned outpatient department$380$275 to $631

How much rates vary

Facilitymedian $380 · 10th to 90th $204 to $813Professionalmedian $275 · 10th to 90th $166 to $676
$200$500$1K$2Kfacility $380professional $275

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
$190.55
Median
$478.63
Typical High
$812.83
Aetna
Setting
Professional
Modifier
Global
Typical Low
$151.36
Median
$204.17
Typical High
$831.76
AllWays Health Partners
Setting
Facility
Modifier
Global
Typical Low
$204.17
Median
$316.23
Typical High
$891.25
AllWays Health Partners
Setting
Professional
Modifier
Global
Typical Low
$165.96
Median
$275.42
Typical High
$912.01
BCBS
Setting
Facility
Modifier
Global
Typical Low
$275.42
Median
$346.74
Typical High
$549.54
BCBS
Setting
Professional
Modifier
Global
Typical Low
$257.04
Median
$257.04
Typical High
$257.04
Cigna
Setting
Facility
Modifier
Global
Typical Low
$194.98
Median
$213.80
Typical High
$436.52
Cigna
Setting
Professional
Modifier
Global
Typical Low
$151.36
Median
$331.13
Typical High
$575.44
Fallon Health
Setting
Facility
Modifier
Global
Typical Low
$144.54
Median
$1,584.89
Typical High
$7,079.46
Fallon Health
Setting
Professional
Modifier
Global
Typical Low
$204.17
Median
$398.11
Typical High
$467.74
Harvard Pilgrim
Setting
Professional
Modifier
Global
Typical Low
$275.42
Median
$275.42
Typical High
$457.09
Mass General Brigham
Setting
Facility
Modifier
Global
Typical Low
$204.17
Median
$316.23
Typical High
$891.25
Mass General Brigham
Setting
Professional
Modifier
Global
Typical Low
$165.96
Median
$275.42
Typical High
$912.01
United
Setting
Facility
Modifier
Global
Typical Low
$165.96
Median
$275.42
Typical High
$331.13
United
Setting
Professional
Modifier
Global
Typical Low
$165.96
Median
$275.42
Typical High
$549.54

Where Massachusetts 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.

Massachusetts· 20th of 51

$275

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.