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Immunodiffusion Test

Illinois rates for HCPCS 86329

A laboratory method in which a sample and a matching reagent spread toward each other through a soft gel and form a visible line where they meet, showing that a specific antibody or protein is present. It is reported for substances that do not have a standard named test of their own. It gives a present-or-absent style answer rather than a precise measured amount.

Rates data updated July 2026.

How much does Immunodiffusion Test cost?

$16.98

Typical negotiated rate. In Illinois, July 2026.

Insurers have agreed to pay about $16.98 for this service. The price depends on where it is billed: about $12.02 from a physician practice, and about $22.91 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$12.02$11.22 to $21.38
FacilityA hospital or hospital-owned outpatient department$22.91$14.45 to $32.36

How much rates vary

Facilitymedian $23 · 10th to 90th $12 to $60Professionalmedian $12 · 10th to 90th $10 to $37
$5.0$10.0$20.0$50.0$100.0$200.0facility $23professional $12

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
$11.48
Median
$22.39
Typical High
$38.90
Aetna
Setting
Professional
Modifier
Global
Typical Low
$10.96
Median
$12.02
Typical High
$29.51
BCBS
Setting
Facility
Modifier
Global
Typical Low
$17.78
Median
$57.54
Typical High
$177.83
BCBS
Setting
Professional
Modifier
Global
Typical Low
$3.47
Median
$10.72
Typical High
$10.72
Cigna
Setting
Facility
Modifier
Global
Typical Low
$15.85
Median
$32.36
Typical High
$64.57
Cigna
Setting
Professional
Modifier
Global
Typical Low
$7.41
Median
$16.22
Typical High
$25.12
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$15.49
Median
$28.18
Typical High
$151.36
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
$18.20
Median
$18.20
Typical High
$18.20
United
Setting
Facility
Modifier
Global
Typical Low
$10.47
Median
$14.13
Typical High
$28.18
United
Setting
Professional
Modifier
Global
Typical Low
$5.89
Median
$10.47
Typical High
$14.13

Where Illinois sits

The same service costs 2.6 times more in South Dakota than in Washington, DC. Every bar is a state, most expensive first. Pick one to see its carriers and full range.

Illinois $16.98 · 13th of 51
SD $26.92DC $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.