Lab tests CPT 82140 Outpatient

Ammonia test cost in Tomahawk, WI

In Tomahawk, WI, 1 hospital lists a cash price for ammonia blood test: from $90.35 to $90.35, with a median of $90.35. Across Wisconsin, the median is $89.76 at 96 hospitals.

Cash prices at 1 facility for code 82140, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 2026.

Lowest$90.35Aspirus Tomahawk Hospital

Median$90.35half of hospitals charge less

Highest$90.35in this market

Difference1.0×highest vs lowest

Hospitals, cheapest first

Hospital	Cash price	List price	Insurers pay	Off list
Aspirus Tomahawk Hospital Tomahawk, WI · (715) 453-7700 Fac Assay of Ammonia File of Apr 1, 2026 · source file	$90.35	$139.00	—	35%

Hospital The hospital that published the price, its city and the line exactly as written in its price file.

Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More

List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More

Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More

Off list How much lower the cash price is than the list price.

Outpatient: lowest $90.35, median $90.35, highest $90.35.

As an inpatient, the same code is billed by 1 facility here, median $90.35. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.

What it is

An ammonia test measures ammonia in the blood. It is used for confusion or drowsiness in people with liver disease and for some rare inherited disorders in newborns.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.