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Group A Strep Antigen Test, Laboratory Immunoassay

Montana 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?

$22.39

Typical negotiated rate. In Montana, October 2026.

Insurers have agreed to pay about $22.39 for this service. The price depends on where it is billed: about $22.39 from a physician practice, and about $25.12 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$22.39$15.14 to $22.39
FacilityA hospital or hospital-owned outpatient department$25.12$22.39 to $28.84

How much rates vary

Facilitymedian $25 · 10th to 90th $22 to $35Professionalmedian $22 · 10th to 90th $7 to $28
$10$20$50$100facility $25professional $22

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
$81.28
Median
$104.71
Typical High
$239.88
Aetna
Setting
Professional
Modifier
None
Typical Low
$10.96
Median
$12.88
Typical High
$23.99
BCBS Montana
Setting
Facility
Modifier
None
Typical Low
$22.39
Median
$22.39
Typical High
$22.39
BCBS Montana
Setting
Professional
Modifier
None
Typical Low
$22.39
Median
$22.39
Typical High
$22.39
Cigna
Setting
Facility
Modifier
None
Typical Low
$25.12
Median
$33.11
Typical High
$95.50
Cigna
Setting
Professional
Modifier
None
Typical Low
$8.13
Median
$19.50
Typical High
$23.99
MountainHealth Co-op
Setting
Facility
Modifier
None
Typical Low
$20.89
Median
$28.18
Typical High
$33.88
MountainHealth Co-op
Setting
Professional
Modifier
None
Typical Low
$22.91
Median
$25.12
Typical High
$30.20
Providence
Setting
Facility
Modifier
None
Typical Low
$17.38
Median
$33.11
Typical High
$95.50
Providence
Setting
Professional
Modifier
None
Typical Low
$15.14
Median
$15.14
Typical High
$16.98
United
Setting
Professional
Modifier
None
Typical Low
$6.92
Median
$7.08
Typical High
$16.98

Where Montana 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.

Montana· 6th of 51

$22.39

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.