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Fibrin-Stabilizing Factor (XIII) Solubility Screen

Maryland rates for HCPCS 85291

Screens for a shortage of the clotting protein that stabilizes fibrin, the mesh holding a blood clot together, known as factor XIII. A clot formed from the blood sample is placed in a solution and watched: a clot that dissolves points to a deficiency, while a clot that holds together does not. The answer is yes-or-no rather than a measured level or activity figure.

Rates data updated October 2026.

How much does Fibrin-Stabilizing Factor (XIII) Solubility Screen cost?

$6.76

Typical negotiated rate. In Maryland, October 2026.

Insurers have agreed to pay about $6.76 for this service. Most negotiated rates run $6.03 to $7.24.

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

Facilitymedian $6 · 10th to 90th $5 to $30Professionalmedian $7 · 10th to 90th $5 to $10
$5$10$20facility $6professional $7

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

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Professional
Modifier
None
Typical Low
$6.76
Median
$6.76
Typical High
$7.41
CareFirst
Setting
Professional
Modifier
None
Typical Low
$6.61
Median
$7.24
Typical High
$7.59
Cigna
Setting
Facility
Modifier
None
Typical Low
$4.79
Median
$6.31
Typical High
$11.75
Cigna
Setting
Professional
Modifier
None
Typical Low
$4.79
Median
$9.12
Typical High
$22.39
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$9.12
Median
$10.47
Typical High
$17.38
United
Setting
Facility
Modifier
None
Typical Low
$30.20
Median
$30.20
Typical High
$30.20
United
Setting
Professional
Modifier
None
Typical Low
$4.07
Median
$5.13
Typical High
$7.59
Wellpoint
Setting
Professional
Modifier
None
Typical Low
$3.55
Median
$8.71
Typical High
$8.71
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
$3.39
Median
$3.39
Typical High
$3.39
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$1.35
Median
$1.38
Typical High
$1.38

Where Maryland sits

The same service costs 5.9 times more in Kansas 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· 49th of 51

$6.76

KS $32.36AL $5.50

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.