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Rapid Single-Step Immunoassay

Colorado 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?

$9.12

Typical negotiated rate. In Colorado, July 2026.

Insurers have agreed to pay about $9.12 for this service. The price depends on where it is billed: about $7.41 from a physician practice, and about $25.12 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$7.41$6.92 to $8.13
FacilityA hospital or hospital-owned outpatient department$25.12$12.88 to $39.81

How much rates vary

Facilitymedian $25 · 10th to 90th $7 to $49Professionalmedian $7 · 10th to 90th $4 to $9
$5$10$20$50facility $25professional $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
$6.03
Median
$20.89
Typical High
$45.71
Aetna
Setting
Professional
Modifier
Global
Typical Low
$7.08
Median
$7.41
Typical High
$9.12
Anthem BCBS
Setting
Facility
Modifier
Global
Typical Low
$12.02
Median
$28.84
Typical High
$48.98
Anthem BCBS
Setting
Professional
Modifier
Global
Typical Low
$4.07
Median
$4.07
Typical High
$7.41
Cigna
Setting
Facility
Modifier
Global
Typical Low
$5.13
Median
$6.76
Typical High
$25.70
Cigna
Setting
Professional
Modifier
Global
Typical Low
$4.57
Median
$5.50
Typical High
$11.22
Denver HMP
Setting
Facility
Modifier
Global
Typical Low
$7.41
Median
$10.47
Typical High
$19.95
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$13.80
Median
$43.65
Typical High
$43.65
Select Health
Setting
Facility
Modifier
Global
Typical Low
$10.00
Median
$17.78
Typical High
$20.42
Select Health
Setting
Professional
Modifier
Global
Typical Low
$6.76
Median
$6.76
Typical High
$9.55
United
Setting
Facility
Modifier
Global
Typical Low
$6.46
Median
$9.55
Typical High
$14.45
United
Setting
Professional
Modifier
Global
Typical Low
$5.75
Median
$7.08
Typical High
$9.55

Where Colorado 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.

Colorado· 33rd of 51

$9.12

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.