HCPCS J3399

Injection, onasemnogene abeparvovec-xioi, per treatment, up to 5x10^15 vector genomes

Current code2 hospitals with prices

Description from CMS's HCPCS Level II code file.

What Washington hospitals publish for this code

Commercial insurance: Rate negotiated with a private insurer or employer plan, including exchange and public-option plans.

Prices for HCPCS J3399 by hospital
Hospital	Commercial insurance rates (lowest – highest)	Cash price	List price (before discounts)
Mary Bridge Children's HospitalTacomaFile dated 2026-08-27	$1,213,863 – $1,523,8396 plans	$742,424 – $761,919	$1,856,060 – $1,904,798
Seattle Children's HospitalSeattle	—	$719,225 – $1,941,172	$719,225 – $1,941,172

Lowest and highest amounts each hospital lists for this code during a hospital stay, including lines it lists for both settings or without saying which. A doctor’s fee is shown separately when the hospital lists one with the code. “At least” means plans were counted in more than one group and some may be the same plan. This is one line of a bill; most care brings several.

Medicare (traditional) reference

Only for people on original Medicare. These are CMS’s 2026 amounts. They aren’t what private insurance or cash patients pay.

Hospital outpatient payment (national): $2,679,817 (APC 9141)