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CSTB Known Family Variant Test

Michigan rates for HCPCS 81190

A blood test that checks for one specific change in the CSTB gene that has already been identified in the family. Changes in this gene cause an inherited epilepsy that begins in adolescence with sudden muscle jerks and seizures. Only the family's known change is looked for.

Rates data updated October 2026.

How much does CSTB Known Family Variant Test cost?

$178

Typical negotiated rate. In Michigan, October 2026.

Insurers have agreed to pay about $178 for this service. The price depends on where it is billed: about $178 from a physician practice, and about $178 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 6 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$178$148 to $200
FacilityA hospital or hospital-owned outpatient department$178$178 to $240

How much rates vary

Facilitymedian $178 · 10th to 90th $138 to $347Professionalmedian $178 · 10th to 90th $100 to $234
$10$20$50$100$200$500facility $178professional $178

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

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$177.83
Median
$177.83
Typical High
$275.42
Aetna
Setting
Facility
Modifier
52 · Reduced service
Typical Low
$87.10
Median
$87.10
Typical High
$138.04
Aetna
Setting
Facility
Modifier
53 · Discontinued
Typical Low
$35.48
Median
$35.48
Typical High
$54.95
Aetna
Setting
Professional
Modifier
None
Typical Low
$169.82
Median
$181.97
Typical High
$186.21
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$85.11
Median
$91.20
Typical High
$93.33
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$33.88
Median
$36.31
Typical High
$37.15
BCBS Michigan
Setting
Facility
Modifier
None
Typical Low
$138.04
Median
$199.53
Typical High
$346.74
Cigna
Setting
Professional
Modifier
None
Typical Low
$85.11
Median
$107.15
Typical High
$251.19
Health Alliance Plan
Setting
Facility
Modifier
None
Typical Low
$177.83
Median
$177.83
Typical High
$512.86
Health Alliance Plan
Setting
Facility
Modifier
52 · Reduced service
Typical Low
$87.10
Median
$87.10
Typical High
$138.04
Health Alliance Plan
Setting
Facility
Modifier
53 · Discontinued
Typical Low
$35.48
Median
$35.48
Typical High
$54.95
Health Alliance Plan
Setting
Professional
Modifier
None
Typical Low
$177.83
Median
$177.83
Typical High
$239.88
Health Alliance Plan
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$87.10
Median
$87.10
Typical High
$87.10
Health Alliance Plan
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$35.48
Median
$35.48
Typical High
$35.48
Priority Health
Setting
Professional
Modifier
None
Typical Low
$81.28
Median
$107.15
Typical High
$251.19
United
Setting
Facility
Modifier
None
Typical Low
$112.20
Median
$165.96
Typical High
$223.87
United
Setting
Professional
Modifier
None
Typical Low
$77.62
Median
$112.20
Typical High
$186.21

Where Michigan sits

The same service costs 4.2 times more in Texas 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.

Michigan· 28th of 51

$178

TX $468DE $112

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.