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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 October 2026.

How much does Immunodiffusion Test cost?

$20.42

Typical negotiated rate. In Montana, October 2026.

Insurers have agreed to pay about $20.42 for this service. The price depends on where it is billed: about $19.05 from a physician practice, and about $23.99 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 5 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$19.05$8.51 to $20.42
FacilityA hospital or hospital-owned outpatient department$23.99$20.89 to $27.54

How much rates vary

Facilitymedian $24 · 10th to 90th $20 to $32Professionalmedian $19 · 10th to 90th $6 to $25
$10$20$50facility $24professional $19

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
Professional
Modifier
None
Typical Low
$16.22
Median
$16.22
Typical High
$16.22
Cigna
Setting
Facility
Modifier
None
Typical Low
$20.42
Median
$20.89
Typical High
$41.69
Cigna
Setting
Professional
Modifier
None
Typical Low
$16.22
Median
$20.42
Typical High
$20.42
MountainHealth Co-op
Setting
Facility
Modifier
None
Typical Low
$17.38
Median
$23.99
Typical High
$32.36
MountainHealth Co-op
Setting
Professional
Modifier
None
Typical Low
$19.05
Median
$20.89
Typical High
$25.70
Providence
Setting
Facility
Modifier
None
Typical Low
$20.42
Median
$20.42
Typical High
$41.69
Providence
Setting
Professional
Modifier
None
Typical Low
$12.59
Median
$12.59
Typical High
$20.42
United
Setting
Professional
Modifier
None
Typical Low
$5.89
Median
$5.89
Typical High
$14.13

Where Montana 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.

Montana· 7th of 51

$20.42

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.