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Procedure price report · Other Laboratory

Immunodiffusion antibody test, not otherwise specified

CPT 86329the billing code this page is about

A laboratory test in which antibodies and antigens spread through a gel to show whether a specific antibody is present, used when no more specific immunodiffusion code applies.

Hospitals typically charge $63 cash for this outpatient procedure — the median across 1,138 hospitals that filed a usable cash price; the average of the middle 60% is $67. Most fall between $23 and $137 (20th–80th percentile).

Hospitals
1,138
States
48
Filings dated
Dec 2023 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 24, 2026

Median: half of hospitals filed less, half more — and it is a price some hospital actually filed. Average of the middle 60%: the mean of the prices between the 20th and 80th percentiles. We never publish the plain average, the lowest or the highest price: the extremes in hospital price files are chargemaster artefacts, not prices anyone pays.

What hospitals charge, from cheapest to most expensive

Cash price percentiles, outpatient, across 1,138 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$14$25$63$122$181

The most expensive tenth of hospitals charges at least 13× what the cheapest tenth charges ($14 vs $181).

How the prices are spread

$10 – $14: 26 hospitals$10$14 – $19: 113 hospitals$19 – $26: 98 hospitals$19$26 – $37: 136 hospitals$37 – $51: 73 hospitals$37$51 – $70: 102 hospitals$70 – $97: 158 hospitals$70$97 – $135: 145 hospitals$135 – $187: 122 hospitals$135$187 – $259: 53 hospitals$187median $63price bands are equal on a log scale
Hospitals per price band (1,026 of 1,138 — the bands cover the 5th to 95th percentile)
FromToHospitals
$10$1426
$14$19113
$19$2698
$26$37136
$37$5173
$51$70102
$70$97158
$97$135145
$135$187122
$187$25953

By state

The median cash price in each state, against the national median of $63.

Alaska: 4 hospitals filed a usable price — fewer than 10, so no figureAKMaine: median $24 across 11 hospitalsME$24Vermont: 1 hospital filed a usable price — fewer than 10, so no figureVTNew Hampshire: no hospital in the corpus filed a usable priceNHWashington: median $32 across 25 hospitalsWA$32Idaho: 5 hospitals filed a usable price — fewer than 10, so no figureIDMontana: no hospital in the corpus filed a usable priceMTNorth Dakota: 1 hospital filed a usable price — fewer than 10, so no figureNDMinnesota: 3 hospitals filed a usable price — fewer than 10, so no figureMNIllinois: median $97 across 59 hospitalsIL$97Wisconsin: median $79 across 22 hospitalsWI$79Michigan: median $24 across 47 hospitalsMI$24New York: median $34 across 61 hospitalsNY$34Massachusetts: median $53 across 18 hospitalsMA$53Oregon: median $65 across 10 hospitalsOR$65Nevada: median $43 across 10 hospitalsNV$43Wyoming: 7 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: 1 hospital filed a usable price — fewer than 10, so no figureSDIowa: median $49 across 21 hospitalsIA$49Indiana: median $41 across 33 hospitalsIN$41Ohio: median $63 across 66 hospitalsOH$63Pennsylvania: median $67 across 63 hospitalsPA$67New Jersey: median $15 across 37 hospitalsNJ$15Connecticut: 5 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 4 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $32 across 68 hospitalsCA$32Utah: 3 hospitals filed a usable price — fewer than 10, so no figureUTColorado: median $89 across 26 hospitalsCO$89Nebraska: median $99 across 17 hospitalsNE$99Missouri: median $81 across 34 hospitalsMO$81Kentucky: median $124 across 26 hospitalsKY$124West Virginia: 4 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: median $83 across 34 hospitalsVA$83Maryland: median $17 across 11 hospitalsMD$17Delaware: 5 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $63 across 23 hospitalsAZ$63New Mexico: 5 hospitals filed a usable price — fewer than 10, so no figureNMKansas: median $96 across 14 hospitalsKS$96Arkansas: median $103 across 13 hospitalsAR$103Tennessee: median $23 across 23 hospitalsTN$23North Carolina: median $72 across 25 hospitalsNC$72South Carolina: median $60 across 13 hospitalsSC$60Oklahoma: median $91 across 33 hospitalsOK$91Louisiana: median $33 across 15 hospitalsLA$33Mississippi: median $30 across 17 hospitalsMS$30Alabama: median $95 across 10 hospitalsAL$95Georgia: median $152 across 44 hospitalsGA$152Hawaii: median $37 across 10 hospitalsHI$37Texas: median $126 across 87 hospitalsTX$126Florida: median $19 across 64 hospitalsFL$19
Cash price by state, most expensive first. National median $63. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Georgia GA44$152+142%$35 – $161
Texas TX87$126+99%$50 – $422
Kentucky KY26$124+96%$34 – $156
Arkansas AR13$103+63%$29 – $103
Nebraska NE17$99+57%$35 – $216
Illinois IL59$97+54%$49 – $153
Kansas KS14$96+53%$78 – $190
Alabama AL10$95+51%$30 – $100
Oklahoma OK33$91+44%$27 – $163
Colorado CO26$89+41%$80 – $575
Virginia VA34$83+32%$16 – $137
Missouri MO34$81+28%$27 – $134
Wisconsin WI22$79+25%$35 – $79
North Carolina NC25$72+14%$45 – $85
Pennsylvania PA63$67+5%$16 – $159
Oregon OR10$65+3%$55 – $76
Ohio OH66$630%$34 – $154
Arizona AZ23$630%$16 – $82
South Carolina SC13$60−5%$31 – $215
Massachusetts MA18$53−16%$34 – $133
Iowa IA21$49−23%$49 – $95
Nevada NV10$43−32%$14 – $181
Indiana IN33$41−34%$22 – $176
Hawaii HI10$37−42%$37 – $116
New York NY61$34−46%$14 – $94
Louisiana LA15$33−48%$18 – $38
Washington WA25$32−49%$28 – $63
California CA68$32−49%$13 – $128
Mississippi MS17$30−52%$10 – $55
Michigan MI47$24−62%$19 – $90
Maine ME11$24−62%$9 – $36
Tennessee TN23$23−63%$23 – $97
Florida FL64$19−70%$8 – $120
Maryland MD11$17−73%$13 – $23
New Jersey NJ37$15−75%$14 – $120
Wyoming WY7not enough hospitals filed a usable price
Connecticut CT5not enough hospitals filed a usable price
Delaware DE5not enough hospitals filed a usable price
Idaho ID5not enough hospitals filed a usable price
New Mexico NM5not enough hospitals filed a usable price
Alaska AK4not enough hospitals filed a usable price
Rhode Island RI4not enough hospitals filed a usable price
West Virginia WV4not enough hospitals filed a usable price
Minnesota MN3not enough hospitals filed a usable price
Utah UT3not enough hospitals filed a usable price
North Dakota ND1not enough hospitals filed a usable price
South Dakota SD1not enough hospitals filed a usable price
Vermont VT1not enough hospitals filed a usable price

Hospitals like yours

The same distribution cut by the kind of hospital. Hospital type and ownership come from CMS; a hospital counts as part of a system when its price file is shared with at least one other hospital under the same brand. The national median is $63.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care933$59$20 – $134
Children’s22$64$27 – $177
Critical access181$83$35 – $146
Ownership
For-profit172$84$23 – $233
Government132$58$23 – $120
Non-profit832$61$22 – $128
System affiliation
Part of a system989$64$23 – $138
Independent149$60$22 – $124

Cash price vs list price

Median list price (chargemaster)$102
Median cash price$63
Cash as a share of list, median hospital60%

At the typical hospital, asking for the cash price cuts the list price by about 40%. The share is the median of each hospital’s own cash ÷ list ratio, over hospitals that filed both — not the ratio of the two medians above.

The same procedure, inpatient

743 hospitals filed a usable inpatient cash price for this code. The median is $64 and the average of the middle 60% is $68; most fall between $25 and $141.

Cash price percentiles, inpatient, across 743 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$19$31$64$126$165

The most expensive tenth of hospitals charges at least 8.9× what the cheapest tenth charges ($19 vs $165).

Of the 853 hospitals that filed this code inpatient, 743 gave a usable cash price; 60 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 50 a list price only.

How complete is this

1,138 of the 3,956 hospitals with a price file in our corpus (29%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 1,275 hospitals that filed this code at all gave us
Usable cash price — counted1,138
Cash price carrying a plausibility flag — shown on the compare tool, excluded here79
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded0
An estimate rather than a filed cash price — excluded0
A list price only, no cash figure — excluded58
Hospitals that filed this code1,275

Sections not shown for this setting

  • Against Medicare: Medicare has no separately payable national outpatient (OPPS) rate for this code, so there is nothing honest to compare against.
  • Since our last snapshot: there is no earlier snapshot at least 90 days older than this one yet.

We last checked these hospitals’ price files for changes between September 4, 2026 and September 24, 2026; the figures were computed September 25, 2026 from filings loaded through September 24, 2026. The percentiles and averages use only the “counted” row.

Related procedures

Part of the Other Laboratory family.

Hospitals file this code under descriptions such as IMMUNODIFFUSION NES.

Method

Source
The machine-readable price files every U.S. hospital is required by CMS to publish, parsed per hospital. Nothing is surveyed, sampled or modelled.
What counts
One cash (self-pay) price per hospital for this code and setting. A hospital’s own filing can rule its number out — a placeholder, a “not applicable” note, a list price standing in for cash — and our plausibility checks can flag a price far below what every other hospital files. Both kinds are disclosed above and excluded from the statistics; on the compare tool a flagged price is still shown.
Statistics
Percentiles are discrete: each is a price some hospital filed. The average is the mean of the prices between the 20th and 80th percentiles. We never publish the plain mean, the minimum or the maximum. A state needs 10 hospitals and a segment 20 to show a figure; otherwise the row shows its count and no number. Medicare is the national unadjusted OPPS rate where one exists.
Names
Procedure names on these pages are our own plain-language titles, not the AMA’s copyrighted CPT descriptors. The code is the identity.

The full rules — sources, statistics, thresholds, limitations — are on the methodology page.

Download this page’s figures: JSON · CSV. Aggregates only — the per-hospital prices are on the compare tool.

Cite: HospitalRates.com, “Immunodiffusion antibody test, not otherwise specified (CPT 86329) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-86329-immunodiffusion-antibody-test-not-otherwise-specified