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Rapid Single-Step Immunoassay

Tennessee 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?

$7.59

Typical negotiated rate. In Tennessee, July 2026.

Insurers have agreed to pay about $7.59 for this service. The price depends on where it is billed: about $7.24 from a physician practice, and about $14.79 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 5 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$7.24$7.24 to $8.51
FacilityA hospital or hospital-owned outpatient department$14.79$8.13 to $34.67

How much rates vary

Facilitymedian $15 · 10th to 90th $7 to $36Professionalmedian $7 · 10th to 90th $7 to $10
$2$5$10$20$50facility $15professional $7

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
$7.24
Median
$14.79
Typical High
$36.31
Aetna
Setting
Professional
Modifier
Global
Typical Low
$7.24
Median
$7.24
Typical High
$9.12
BCBS
Setting
Professional
Modifier
Global
Typical Low
$9.55
Median
$10.47
Typical High
$10.47
Cigna
Setting
Facility
Modifier
Global
Typical Low
$6.46
Median
$20.42
Typical High
$34.67
Cigna
Setting
Professional
Modifier
Global
Typical Low
$4.37
Median
$7.08
Typical High
$14.45
Lucent Health
Setting
Facility
Modifier
Global
Typical Low
$70.79
Median
$70.79
Typical High
$72.44
United
Setting
Facility
Modifier
Global
Typical Low
$4.07
Median
$8.71
Typical High
$9.55
United
Setting
Professional
Modifier
Global
Typical Low
$5.75
Median
$8.71
Typical High
$11.75

Where Tennessee 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.

Tennessee· 49th of 51

$7.59

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.