Adjuvanted flu shot (65+) cost in Riverside, CA — inpatient
In Riverside-San Bernardino-Ontario, CA, 4 hospitals list a cash price for adjuvanted flu shot (with an immune booster ingredient), for age 65 and older as an inpatient: from $141.28 to $237.99, with a median of $141.28. The lowest listed price is at Kaiser Foundation Hospital - Fontana and 2 other hospitals. Across California, the median is $141.28 at 53 hospitals.
Cash prices at 4 facilities across 4 cities for code 90653, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Riverside-San Bernardino-Ontario, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Kaiser Foundation Hospital - Fontana lowest Fontana, CA · (909) 427-5000 flu vaccine 2025-26 (65 yrs up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $141.28 | $271.70 | — | 48% | — source file |
| Kaiser Foundation Hospital - Riverside lowest Riverside, CA · (951) 353-2000 flu vaccine 2025-26 (65 yrs up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $141.28 | $271.70 | — | 48% | — source file |
| Kaiser Foundation Hospital - Moreno Valley lowest Moreno Valley, CA · (951) 251-6530 flu vaccine 2025-26 (65 yrs up) PF 45 mcg (15 mcg x 3)/0.5 mL Syringe 0.5 mL SYRINGE | $141.28 | $271.70 | — | 48% | — source file |
| St Mary Medical Center Apple Valley, CA · (760) 242-2311 INFLUENZA VAC TYPE A&B SURFACE ANT ADJ SUSP PREF SYR 0.5 ML | $237.99 | $495.81 | — | 52% | Apr 1, 2026 source file |
Inpatient: lowest $141.28, median $141.28, highest $237.99 — a 1.7× difference within the same market.
As an outpatient, the same code is billed by 4 facilities here, median $141.28 — that is the price to compare if you are not being admitted.
What it is
The adjuvanted flu shot contains an added ingredient (MF59) that strengthens the immune response. It is one of three flu vaccines the CDC prefers for people 65 and older.
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); Medicare bills use G0008 instead.