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Repeat Expansion Test, Inherited Ataxia

Washington, DC rates for HCPCS 81178

A laboratory test on a blood sample that measures a short stretch of DNA that is normally repeated a set number of times within a single gene. An abnormally high number of repeats causes an inherited disorder of balance, coordination and speech that develops gradually over years. The test is used to confirm a diagnosis in someone with symptoms, or to test a relative of an affected person.

Rates data updated July 2026.

How much does Repeat Expansion Test, Inherited Ataxia cost?

$102

Typical negotiated rate. In Washington, DC, July 2026.

Insurers have agreed to pay about $102 for this service. The price depends on where it is billed: about $102 from a physician practice, and about $166 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$102$102 to $102
FacilityA hospital or hospital-owned outpatient department$166$102 to $447

How much rates vary

Facilitymedian $166 · 10th to 90th $102 to $447Professionalmedian $102 · 10th to 90th $98 to $107
$1.0$10.0$100.0$1.0Kfacility $166professional $102

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
$102.33
Median
$102.33
Typical High
$446.68
Aetna
Setting
Professional
Modifier
Global
Typical Low
$102.33
Median
$102.33
Typical High
$107.15
CareFirst
Setting
Professional
Modifier
Global
Typical Low
$97.72
Median
$97.72
Typical High
$131.83
Cigna
Setting
Facility
Modifier
Global
Typical Low
$223.87
Median
$229.09
Typical High
$524.81
Cigna
Setting
Professional
Modifier
Global
Typical Low
$77.62
Median
$158.49
Typical High
$616.60
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$158.49
Median
$239.88
Typical High
$275.42
United
Setting
Facility
Modifier
Global
Typical Low
$57.54
Median
$165.96
Typical High
$165.96
United
Setting
Professional
Modifier
Global
Typical Low
$57.54
Median
$61.66
Typical High
$128.82

Where Washington, DC sits

The same service costs 3.4 times more in Alaska than in Delaware. Every bar is a state, most expensive first. Pick one to see its carriers and full range.

Washington, DC $102 · 47th of 51
AK $309DE $91.20

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.