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Group A Strep Antigen Test, Laboratory Immunoassay

Missouri 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?

$19.05

Typical negotiated rate. In Missouri, October 2026.

Insurers have agreed to pay about $19.05 for this service. The price depends on where it is billed: about $16.60 from a physician practice, and about $28.84 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$16.60$10.00 to $25.12
FacilityA hospital or hospital-owned outpatient department$28.84$18.20 to $57.54

How much rates vary

Facilitymedian $29 · 10th to 90th $15 to $79Professionalmedian $17 · 10th to 90th $7 to $29
$10$20$50$100facility $29professional $17

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
Facility
Modifier
None
Typical Low
$14.45
Median
$21.38
Typical High
$30.90
Aetna
Setting
Professional
Modifier
None
Typical Low
$12.30
Median
$14.45
Typical High
$19.50
Anthem BCBS
Setting
Facility
Modifier
None
Typical Low
$16.98
Median
$16.98
Typical High
$77.62
Anthem BCBS
Setting
Professional
Modifier
None
Typical Low
$6.76
Median
$21.38
Typical High
$31.62
BCBS Kansas City
Setting
Facility
Modifier
None
Typical Low
$18.20
Median
$23.99
Typical High
$45.71
Cigna
Setting
Facility
Modifier
None
Typical Low
$15.85
Median
$37.15
Typical High
$69.18
Cigna
Setting
Professional
Modifier
None
Typical Low
$7.24
Median
$19.05
Typical High
$26.30
Medica
Setting
Facility
Modifier
None
Typical Low
$15.14
Median
$29.51
Typical High
$79.43
Medica
Setting
Professional
Modifier
None
Typical Low
$7.08
Median
$10.00
Typical High
$19.95
United
Setting
Facility
Modifier
None
Typical Low
$15.14
Median
$15.14
Typical High
$15.14
United
Setting
Professional
Modifier
None
Typical Low
$7.08
Median
$10.00
Typical High
$22.39
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
$7.08
Median
$7.24
Typical High
$9.77
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$2.88
Median
$2.88
Typical High
$3.89

Where Missouri 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.

Missouri· 16th of 51

$19.05

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.