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White Cell Chemotaxis Assay

Illinois rates for HCPCS 86155

A laboratory test that measures how well white blood cells move towards a chemical signal, the way they normally travel to the site of an infection. Sluggish movement points to a defect in the immune system's ability to bring defending cells where they are needed.

Rates data updated July 2026.

How much does White Cell Chemotaxis Assay cost?

$20.89

Typical negotiated rate. In Illinois, July 2026.

Insurers have agreed to pay about $20.89 for this service. The price depends on where it is billed: about $14.45 from a physician practice, and about $26.30 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$14.45$13.18 to $28.18
FacilityA hospital or hospital-owned outpatient department$26.30$16.98 to $36.31

How much rates vary

Facilitymedian $26 · 10th to 90th $14 to $69Professionalmedian $14 · 10th to 90th $12 to $43
$10$20$50$100facility $26professional $14

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
$13.18
Median
$25.12
Typical High
$43.65
Aetna
Setting
Professional
Modifier
Global
Typical Low
$12.59
Median
$13.80
Typical High
$33.88
BCBS
Setting
Facility
Modifier
Global
Typical Low
$21.38
Median
$43.65
Typical High
$165.96
Cigna
Setting
Facility
Modifier
Global
Typical Low
$17.78
Median
$37.15
Typical High
$72.44
Cigna
Setting
Professional
Modifier
Global
Typical Low
$8.32
Median
$18.20
Typical High
$28.84
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$17.78
Median
$30.90
Typical High
$125.89
Hally Health
Setting
Facility
Modifier
Global
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$20.89
Median
$20.89
Typical High
$20.89
Molina
Setting
Professional
Modifier
Global
Typical Low
$8.71
Median
$15.85
Typical High
$19.95
United
Setting
Facility
Modifier
Global
Typical Low
$9.55
Median
$15.85
Typical High
$31.62
United
Setting
Professional
Modifier
Global
Typical Low
$6.76
Median
$9.77
Typical High
$15.85

Where Illinois sits

The same service costs 2.4 times more in Hawaii than in Maryland. 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.

Illinois· 9th of 51

$20.89

HI $28.84MD $12.02

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.