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Repeat Expansion Test, Inherited Ataxia

Arizona 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?

$110

Typical negotiated rate. In Arizona, July 2026.

Insurers have agreed to pay about $110 for this service. The price depends on where it is billed: about $102 from a physician practice, and about $209 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$91.20 to $115
FacilityA hospital or hospital-owned outpatient department$209$138 to $417

How much rates vary

Facilitymedian $209 · 10th to 90th $102 to $550Professionalmedian $102 · 10th to 90th $58 to $158
$1.0$10.0$100.0$1.0Kfacility $209professional $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
$144.54
Median
$208.93
Typical High
$549.54
Aetna
Setting
Professional
Modifier
Global
Typical Low
$91.20
Median
$102.33
Typical High
$158.49
BCBS
Setting
Facility
Modifier
Global
Typical Low
$95.50
Median
$389.05
Typical High
$724.44
BCBS
Setting
Professional
Modifier
Global
Typical Low
$131.83
Median
$134.90
Typical High
$933.25
Cigna
Setting
Facility
Modifier
Global
Typical Low
$85.11
Median
$138.04
Typical High
$446.68
Cigna
Setting
Professional
Modifier
Global
Typical Low
$63.10
Median
$123.03
Typical High
$186.21
Medica
Setting
Facility
Modifier
Global
Typical Low
$91.20
Median
$138.04
Typical High
$245.47
Medica
Setting
Professional
Modifier
Global
Typical Low
$57.54
Median
$57.54
Typical High
$691.83
United
Setting
Facility
Modifier
Global
Typical Low
$123.03
Median
$138.04
Typical High
$158.49
United
Setting
Professional
Modifier
Global
Typical Low
$57.54
Median
$57.54
Typical High
$138.04

Where Arizona 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.

Arizona $110 · 43rd 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.