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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 October 2026.

How much does Immunodiffusion Test cost?

$12.02

Typical negotiated rate. In Illinois, October 2026.

Insurers have agreed to pay about $12.02 for this service. The price depends on where it is billed: about $10.72 from a physician practice, and about $31.62 from a hospital or other facility.

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.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$10.72$10.72 to $14.79
FacilityA hospital or hospital-owned outpatient department$31.62$19.05 to $53.70

How much rates vary

Facilitymedian $32 · 10th to 90th $16 to $102Professionalmedian $11 · 10th to 90th $9 to $27
$5$10$20$50$100$200facility $32professional $11

Distribution of negotiated rates across all payers (price axis is log-scale). Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$11.48
Median
$21.88
Typical High
$42.66
Aetna
Setting
Professional
Modifier
None
Typical Low
$11.22
Median
$11.48
Typical High
$14.13
BCBS Illinois
Setting
Facility
Modifier
None
Typical Low
$16.98
Median
$24.55
Typical High
$177.83
BCBS Illinois
Setting
Professional
Modifier
None
Typical Low
$9.77
Median
$10.72
Typical High
$10.72
Cigna
Setting
Facility
Modifier
None
Typical Low
$15.85
Median
$32.36
Typical High
$58.88
Cigna
Setting
Professional
Modifier
None
Typical Low
$7.24
Median
$16.22
Typical High
$25.12
Hally Health
Setting
Professional
Modifier
None
Typical Low
$14.79
Median
$24.55
Typical High
$120.23
Hally Health
Setting
Facility
Modifier
None
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
Hally Health
Setting
Professional
Modifier
None
Typical Low
$18.20
Median
$18.20
Typical High
$18.20
Molina
Setting
Professional
Modifier
None
Typical Low
$9.77
Median
$9.77
Typical High
$17.38
United
Setting
Facility
Modifier
None
Typical Low
$14.13
Median
$16.98
Typical High
$30.20
United
Setting
Professional
Modifier
None
Typical Low
$5.89
Median
$10.47
Typical High
$15.14
4 more rates with less common billing modifiers

A modifier changes what was billed, for example a reduced or repeated service. Each of these modifiers carries under 10% of the published rates for this code. Modifier combinations, and modifiers with fewer than 30 rates for a carrier, are not listed.

Insurance Carrier
Aetna
Setting
Facility
Modifier
52 · Reduced service
Typical Low
$5.75
Median
$10.23
Typical High
$21.38
Aetna
Setting
Facility
Modifier
53 · Discontinued
Typical Low
$2.29
Median
$4.07
Typical High
$8.51
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$5.75
Median
$5.75
Typical High
$7.08
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$2.29
Median
$2.29
Typical High
$2.82

Where Illinois sits

The same service costs 3.2 times more in Alaska than in Kentucky. 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· 37th of 51

$12.02

AK $31.62KY $9.77

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.