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Group A Strep Antigen Test, Laboratory Immunoassay

Connecticut rates for HCPCS 87430

Checks a throat swab for proteins from group A streptococcus, the bacterium behind strep throat, using an instrument-read laboratory immunoassay. It is the laboratory version of the test rather than the strip read by eye during an office visit. Results generally come back the same day, so a decision about antibiotics need not wait for a culture to grow.

Rates data updated October 2026.

How much does Group A Strep Antigen Test, Laboratory Immunoassay cost?

$13.49

Typical negotiated rate. In Connecticut, October 2026.

Insurers have agreed to pay about $13.49 for this service. The price depends on where it is billed: about $10.72 from a physician practice, and about $20.42 from a hospital or other facility.

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.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$10.72$8.51 to $15.85
FacilityA hospital or hospital-owned outpatient department$20.42$16.22 to $26.92

How much rates vary

Facilitymedian $20 · 10th to 90th $12 to $42Professionalmedian $11 · 10th to 90th $7 to $19
$10$20$50facility $20professional $11

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
$10.72
Median
$10.72
Typical High
$18.20
Anthem BCBS
Setting
Facility
Modifier
None
Typical Low
$12.30
Median
$20.42
Typical High
$41.69
Anthem BCBS
Setting
Professional
Modifier
None
Typical Low
$7.24
Median
$10.00
Typical High
$16.98
Cigna
Setting
Facility
Modifier
None
Typical Low
$10.96
Median
$21.88
Typical High
$60.26
Cigna
Setting
Professional
Modifier
None
Typical Low
$14.45
Median
$17.38
Typical High
$26.30
ConnectiCare
Setting
Professional
Modifier
None
Typical Low
$8.51
Median
$13.49
Typical High
$22.39
Health New England
Setting
Facility
Modifier
None
Typical Low
$39.81
Median
$39.81
Typical High
$39.81
United
Setting
Professional
Modifier
None
Typical Low
$8.32
Median
$11.22
Typical High
$29.51
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
$5.37
Median
$5.37
Typical High
$5.50
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$2.14
Median
$2.14
Typical High
$2.19

Where Connecticut sits

The same service costs 3.6 times more in Alaska 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.

Connecticut· 36th of 51

$13.49

AK $38.02AL $10.47

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.