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Group A Strep Antigen Test, Laboratory Immunoassay

Illinois 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 July 2026.

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

$16.98

Typical negotiated rate. In Illinois, July 2026.

Insurers have agreed to pay about $16.98 for this service. The price depends on where it is billed: about $13.80 from a physician practice, and about $34.67 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 7 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$13.80$11.22 to $16.98
FacilityA hospital or hospital-owned outpatient department$34.67$23.99 to $60.26

How much rates vary

Facilitymedian $35 · 10th to 90th $17 to $98Professionalmedian $14 · 10th to 90th $3 to $29
$5$10$20$50$100$200facility $35professional $14

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
$16.60
Median
$34.67
Typical High
$95.50
Aetna
Setting
Professional
Modifier
Global
Typical Low
$10.96
Median
$13.80
Typical High
$30.90
Ambetter
Setting
Professional
Modifier
Global
Typical Low
$5.01
Median
$14.45
Typical High
$16.98
BCBS
Setting
Facility
Modifier
Global
Typical Low
$21.38
Median
$38.02
Typical High
$204.17
BCBS
Setting
Professional
Modifier
Global
Typical Low
$3.47
Median
$12.88
Typical High
$16.98
Cigna
Setting
Facility
Modifier
Global
Typical Low
$16.22
Median
$35.48
Typical High
$77.62
Cigna
Setting
Professional
Modifier
Global
Typical Low
$8.51
Median
$18.62
Typical High
$25.70
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$18.62
Median
$25.70
Typical High
$85.11
Hally Health
Setting
Facility
Modifier
Global
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$21.88
Median
$21.88
Typical High
$21.88
Molina
Setting
Professional
Modifier
Global
Typical Low
$8.32
Median
$9.33
Typical High
$11.75
United
Setting
Facility
Modifier
Global
Typical Low
$10.00
Median
$16.98
Typical High
$33.88
United
Setting
Professional
Modifier
Global
Typical Low
$7.08
Median
$10.00
Typical High
$16.60

Where Illinois sits

The same service costs 4.5 times more in Wyoming than in Connecticut. 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.

Illinois· 34th of 51

$16.98

WY $48.98CT $10.96

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.