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Immunodiffusion Test

Montana 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?

$19.95

Typical negotiated rate. In Montana, July 2026.

Insurers have agreed to pay about $19.95 for this service. The price depends on where it is billed: about $18.20 from a physician practice, and about $20.89 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$18.20$16.22 to $42.66
FacilityA hospital or hospital-owned outpatient department$20.89$17.38 to $27.54

How much rates vary

Facilitymedian $21 · 10th to 90th $14 to $45Professionalmedian $18 · 10th to 90th $10 to $93
$10.0$20.0$50.0$100.0facility $21professional $18

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
Professional
Modifier
Global
Typical Low
$16.22
Median
$16.22
Typical High
$93.33
Cigna
Setting
Facility
Modifier
Global
Typical Low
$20.42
Median
$23.99
Typical High
$79.43
Cigna
Setting
Professional
Modifier
Global
Typical Low
$9.77
Median
$16.22
Typical High
$20.42
MountainHealth Co-op
Setting
Facility
Modifier
Global
Typical Low
$14.13
Median
$19.95
Typical High
$43.65
MountainHealth Co-op
Setting
Professional
Modifier
Global
Typical Low
$14.13
Median
$19.95
Typical High
$43.65
Providence
Setting
Facility
Modifier
Global
Typical Low
$20.42
Median
$27.54
Typical High
$79.43
Providence
Setting
Professional
Modifier
Global
Typical Low
$12.59
Median
$12.59
Typical High
$20.42
United
Setting
Facility
Modifier
Global
Typical Low
$14.13
Median
$14.13
Typical High
$14.13
United
Setting
Professional
Modifier
Global
Typical Low
$5.89
Median
$7.94
Typical High
$19.50

Where Montana 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.

Montana $19.95 · 8th 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.