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CSTB Gene Test

Maryland 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?

$204

Typical negotiated rate. In Maryland, July 2026.

Insurers have agreed to pay about $204 for this service. Most negotiated rates run $178 to $234.

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.

How much rates vary

Facilitymedian $115 · 10th to 90th $115 to $209Professionalmedian $204 · 10th to 90th $123 to $331
$200$500$1Kfacility $115professional $204

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. Small sample; interpret with caution. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Professional
Modifier
Global
Typical Low
$177.83
Median
$204.17
Typical High
$257.04
CareFirst
Setting
Professional
Modifier
Global
Typical Low
$223.87
Median
$223.87
Typical High
$275.42
Cigna
Setting
Professional
Modifier
Global
Typical Low
$141.25
Median
$169.82
Typical High
$489.78
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$275.42
Median
$331.13
Typical High
$416.87
United
Setting
Facility
Modifier
Global
Typical Low
$114.82
Median
$114.82
Typical High
$208.93
United
Setting
Professional
Modifier
Global
Typical Low
$114.82
Median
$123.03
Typical High
$239.88
Wellpoint
Setting
Professional
Modifier
Global
Typical Low
$138.04
Median
$138.04
Typical High
$138.04

Where Maryland 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.

Maryland· 48th of 51

$204

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.