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AFF2 Repeat Sizing Test

Maryland rates for HCPCS 81172

A blood test that measures the size of an unstable repeated stretch of DNA in the AFF2 gene on the X chromosome, where an enlarged repeat causes an inherited form of intellectual disability. It works out exactly how large the repeat is once an earlier test has shown that it is enlarged.

Rates data updated October 2026.

How much does AFF2 Repeat Sizing Test cost?

$224

Typical negotiated rate. In Maryland, October 2026.

Insurers have agreed to pay about $224 for this service. Most negotiated rates run $170 to $245.

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 $224 · 10th to 90th $123 to $295
$200$500professional $224

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
$204.17
Median
$204.17
Typical High
$223.87
CareFirst
Setting
Professional
Modifier
None
Typical Low
$223.87
Median
$245.47
Typical High
$245.47
Cigna
Setting
Professional
Modifier
None
Typical Low
$141.25
Median
$194.98
Typical High
$794.33
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$275.42
Median
$331.13
Typical High
$416.87
United
Setting
Professional
Modifier
None
Typical Low
$114.82
Median
$138.04
Typical High
$239.88
Wellpoint
Setting
Professional
Modifier
None
Typical Low
$138.04
Median
$138.04
Typical High
$218.78
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
$102.33
Median
$102.33
Typical High
$112.20
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$40.74
Median
$41.69
Typical High
$44.67

Where Maryland sits

The same service costs 3.7 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· 39th of 51

$224

AK $617DE $166

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.