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Rapid Single-Step Immunoassay

North Carolina rates for HCPCS 83518

A quick laboratory test that uses antibodies fixed on a strip or cartridge to detect a substance in a sample. The result appears in one step, as a line or color change, giving a yes-or-no or rough-level answer rather than an exact measurement. What is being looked for depends on what the doctor ordered.

Rates data updated July 2026.

How much does Rapid Single-Step Immunoassay cost?

$7.76

Typical negotiated rate. In North Carolina, July 2026.

Insurers have agreed to pay about $7.76 for this service. The price depends on where it is billed: about $7.76 from a physician practice, and about $12.59 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 6 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$7.76$7.59 to $7.76
FacilityA hospital or hospital-owned outpatient department$12.59$8.51 to $50.12

How much rates vary

Facilitymedian $13 · 10th to 90th $8 to $631Professionalmedian $8 · 10th to 90th $4 to $13
$5$10$20$50$100$200$500facility $13professional $8

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
$7.76
Median
$16.60
Typical High
$630.96
Aetna
Setting
Professional
Modifier
Global
Typical Low
$4.47
Median
$7.76
Typical High
$12.59
BCBS
Setting
Facility
Modifier
Global
Typical Low
$16.22
Median
$33.11
Typical High
$33.11
BCBS
Setting
Professional
Modifier
Global
Typical Low
$6.31
Median
$6.31
Typical High
$6.92
Cigna
Setting
Facility
Modifier
Global
Typical Low
$6.61
Median
$19.05
Typical High
$43.65
Cigna
Setting
Professional
Modifier
Global
Typical Low
$4.57
Median
$6.76
Typical High
$14.45
Medcost
Setting
Professional
Modifier
Global
Typical Low
$3.89
Median
$15.85
Typical High
$42.66
Medcost
Setting
Facility
Modifier
Global
Typical Low
$7.08
Median
$10.47
Typical High
$14.79
Medcost
Setting
Professional
Modifier
Global
Typical Low
$5.37
Median
$5.50
Typical High
$6.03
United
Setting
Facility
Modifier
Global
Typical Low
$4.79
Median
$11.48
Typical High
$14.79
United
Setting
Professional
Modifier
Global
Typical Low
$5.75
Median
$7.41
Typical High
$11.75
Wellcare
Setting
Facility
Modifier
Global
Typical Low
$70.79
Median
$70.79
Typical High
$72.44

Where North Carolina sits

The same service costs 2.6 times more in South Dakota than in Washington, DC. 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.

North Carolina· 46th of 51

$7.76

SD $18.62DC $7.24

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.