Lab tests CPT 84100 Inpatient — admitted to hospital

Phosphorus test cost in Richmond, VA — inpatient

In Richmond, VA, 5 hospitals list a cash price for phosphorus (phosphate) blood test as an inpatient: from $46.50 to $96.60, with a median of $96.60. The lowest listed price is at Bon Secours Southside Medical Center — $50.10 less than the median here. Across Virginia, the median is $52.80 at 63 hospitals.

Cash prices at 5 facilities across 4 cities for code 84100, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between — and —.

Lowest$46.50Bon Secours Southside Medical Center

Median$96.60half of hospitals charge less

Highest$96.60in this market

Difference2.1×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in Richmond, VA.

median

Lowest $46.50Highest $96.60

Hospitals, cheapest first

Hospital	Cash price	List price	Insurers pay	Off list
Bon Secours Southside Medical Center lowest Petersburg, VA · (804) 765-5000 HC Assay of Phosphorus Inorganic source file	$46.50	$155.00	—	70%
Bon Secours Richmond Community Hospital Richmond, VA · (804) 225-1701 HC Assay of Phosphorus Inorganic source file	$96.60	$161.00	—	40%
Bon Secours Memorial Regional Medical Center Mechanicsville, VA · (804) 764-6000 HC Assay of Phosphorus Inorganic source file	$96.60	$161.00	—	40%
Bon Secours St Marys Hospital of Richmond Richmond, VA · (804) 285-2011 HC Assay of Phosphorus Inorganic source file	$96.60	$161.00	—	40%
Bon Secours St Francis Medical Center Midlothian, VA · (804) 594-7400 HC Assay of Phosphorus Inorganic source file	$96.60	$161.00	—	40%

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.

Inpatient: lowest $46.50, median $96.60, highest $96.60 — a 2.1× difference within the same market.

As an outpatient, the same code is billed by 11 facilities here, median $313.00 — that is the price to compare if you are not being admitted.

What it is

A phosphorus test measures phosphate in the blood. It is used with calcium for kidney disease, bone disease and parathyroid problems.

What the price covers

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