Vaccines CPT 90381 Inpatient — admitted to hospital

RSV antibody shot (100 mg dose) cost in Boise City, ID — inpatient

In Boise City, ID, 3 hospitals list a cash price for RSV antibody shot for infants and toddlers, larger dose (1 mL, 100 mg) as an inpatient: from $471.90 to $607.13, with a median of $607.13. The lowest listed price is at Saint Alphonsus Regional Medical Center - Boise — $135.23 less than the median here. Across Idaho, the median is $607.13 at 10 hospitals.

Cash prices at 3 facilities across 2 cities for code 90381, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 31, 2026 and Mar 31, 2026.

Lowest$471.90Saint Alphonsus Regional Medical Center - Boise

Median$607.13half of hospitals charge less

Highest$607.13in this market

Difference1.3×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 Boise City, ID.

median

Lowest $471.90Highest $1,292.39

Hospitals, cheapest first

Hospital	Cash price	List price	Insurers pay	Off list
Saint Alphonsus Regional Medical Center - Boise lowest Boise, ID · (208) 367-2121 HC Vaccine Respiratory Syncytial Virus Monoclonal Antibody Seasonal Dose 1 Ml Im File of Mar 31, 2026 · source file	$471.90	$726.00	$209.09–$1,582.71	35%
St Luke's Nampa Medical Center Nampa, ID · (208) 505-2000 source file	$607.13	$607.13	—	—
St Luke's Regional Medical Center Boise, ID · (208) 381-2222 source file	$607.13	$607.13	—	—
St Luke's Nampa Medical Center Nampa, ID · (208) 505-2000 source file	$1,292.39	$1,292.39	—	—
St Luke's Regional Medical Center Boise, ID · (208) 381-2222 source file	$1,292.39	$1,292.39	—	—

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.

No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More

Inpatient: lowest $471.90, median $607.13, highest $607.13 — a 1.3× difference within the same market.

As an outpatient, the same code is billed by 3 facilities here, median $607.13 — that is the price to compare if you are not being admitted.

Cash or insurance?

At the one hospital here that publishes insurer rates for this code, the cash price is below the highest rate a health plan has negotiated. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.

What it is

This is the larger dose (100 mg) of nirsevimab (Beyfortus), an antibody shot that protects infants from severe RSV. Babies weighing 5 kg (11 lb) or more in their first RSV season get this dose, and high-risk toddlers get two of them in their second season.

What the price covers

The price is for the vaccine dose. Giving the shot is usually a separate line (code 90471 for the first vaccine of the visit, 90472 for each additional one).