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Immunodiffusion Test

Washington 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?

$14.79

Typical negotiated rate. In Washington, July 2026.

Insurers have agreed to pay about $14.79 for this service. The price depends on where it is billed: about $13.18 from a physician practice, and about $22.39 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 9 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$13.18$12.59 to $16.98
FacilityA hospital or hospital-owned outpatient department$22.39$14.79 to $32.36

How much rates vary

Facilitymedian $22 · 10th to 90th $14 to $58Professionalmedian $13 · 10th to 90th $7 to $29
$10$20$50$100facility $22professional $13

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
$30.90
Typical High
$75.86
Aetna
Setting
Professional
Modifier
Global
Typical Low
$13.18
Median
$13.18
Typical High
$93.33
Asuris Northwest Health
Setting
Facility
Modifier
Global
Typical Low
$14.13
Median
$17.38
Typical High
$38.90
Asuris Northwest Health
Setting
Professional
Modifier
Global
Typical Low
$10.47
Median
$12.59
Typical High
$14.45
Cigna
Setting
Facility
Modifier
Global
Typical Low
$13.49
Median
$28.84
Typical High
$44.67
Cigna
Setting
Professional
Modifier
Global
Typical Low
$8.71
Median
$14.79
Typical High
$21.88
Molina
Setting
Professional
Modifier
Global
Typical Low
$8.91
Median
$12.30
Typical High
$64.57
Pacific Source
Setting
Facility
Modifier
Global
Typical Low
$14.13
Median
$14.13
Typical High
$28.18
Premera BCBS
Setting
Facility
Modifier
Global
Typical Low
$14.13
Median
$24.55
Typical High
$38.90
Premera BCBS
Setting
Professional
Modifier
Global
Typical Low
$12.59
Median
$12.59
Typical High
$16.98
Regence BlueShield
Setting
Facility
Modifier
Global
Typical Low
$14.13
Median
$20.89
Typical High
$38.02
Regence BlueShield
Setting
Professional
Modifier
Global
Typical Low
$10.47
Median
$12.59
Typical High
$14.13
United
Setting
Facility
Modifier
Global
Typical Low
$13.49
Median
$16.98
Typical High
$16.98
United
Setting
Professional
Modifier
Global
Typical Low
$5.89
Median
$7.94
Typical High
$16.98
Wellpoint
Setting
Professional
Modifier
Global
Typical Low
$6.31
Median
$7.24
Typical High
$25.12

Where Washington 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.

Washington· 26th of 51

$14.79

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.