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Repeat Expansion Test, Inherited Ataxia

Maryland 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 October 2026.

How much does Repeat Expansion Test, Inherited Ataxia cost?

$102

Typical negotiated rate. In Maryland, October 2026.

Insurers have agreed to pay about $102 for this service. Most negotiated rates run $89.13 to $110.

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

Professionalmedian $102 · 10th to 90th $62 to $138
$100$200professional $102

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
Professional
Modifier
None
Typical Low
$102.33
Median
$102.33
Typical High
$112.20
CareFirst
Setting
Professional
Modifier
None
Typical Low
$97.72
Median
$109.65
Typical High
$109.65
Cigna
Setting
Professional
Modifier
None
Typical Low
$70.79
Median
$97.72
Typical High
$398.11
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$138.04
Median
$165.96
Typical High
$204.17
United
Setting
Professional
Modifier
None
Typical Low
$57.54
Median
$69.18
Typical High
$120.23
Wellpoint
Setting
Professional
Modifier
None
Typical Low
$109.65
Median
$109.65
Typical High
$109.65
2 more rates with less common billing modifiers

A modifier changes what was billed, for example a reduced or repeated service. Each of these modifiers carries under 10% of the published rates for this code. Modifier combinations, and modifiers with fewer than 30 rates for a carrier, are not listed.

Insurance Carrier
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$50.12
Median
$51.29
Typical High
$56.23
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$20.42
Median
$20.42
Typical High
$22.39

Where Maryland sits

The same service costs 5.5 times more in Texas than in Alabama. 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· 46th of 51

$102

TX $347AL $63.10

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.