Vial was initially stored in the refrigerator on 10-May-2023 and the vaccine was administered on 11-Jun-2023; No adverse event; 9 adult patients (Not pregnant) received expired Bivalent Blue Cap booster doses of Moderna COVID-19 vaccine on 10JUN2023 through 24JUN2023/Dose administered after 30-day Use By Date; This spontaneous case was reported by a pharmacist and describes the occurrence of EXPIRED PRODUCT ADMINISTERED (9 adult patients (Not pregnant) received expired Bivalent Blue Cap booster doses of Moderna COVID-19 vaccine on 10JUN2023 through 24JUN2023/Dose administered after 30-day Use By Date), PRODUCT STORAGE ERROR (Vial was initially stored in the refrigerator on 10-May-2023 and the vaccine was administered on 11-Jun-2023) and NO ADVERSE EVENT (No adverse event) in an adult patient of an unknown gender who received mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (batch no. AS7642B) for COVID-19 prophylaxis.     No Medical History information was reported.    On 11-Jun-2023, the patient received dose of mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (unknown route) 1 dosage form. On 11-Jun-2023, the patient experienced EXPIRED PRODUCT ADMINISTERED (9 adult patients (Not pregnant) received expired Bivalent Blue Cap booster doses of Moderna COVID-19 vaccine on 10JUN2023 through 24JUN2023/Dose administered after 30-day Use By Date). On an unknown date, the patient experienced PRODUCT STORAGE ERROR (Vial was initially stored in the refrigerator on 10-May-2023 and the vaccine was administered on 11-Jun-2023) and NO ADVERSE EVENT (No adverse event). At the time of the report, EXPIRED PRODUCT ADMINISTERED (9 adult patients (Not pregnant) received expired Bivalent Blue Cap booster doses of Moderna COVID-19 vaccine on 10JUN2023 through 24JUN2023/Dose administered after 30-day Use By Date), PRODUCT STORAGE ERROR (Vial was initially stored in the refrigerator on 10-May-2023 and the vaccine was administered on 11-Jun-2023) and NO ADVERSE EVENT (No adverse event) outcome was unknown.        For mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (Unknown), the reporter considered NO ADVERSE EVENT (No adverse event) to be not related. No further causality assessments were provided for EXPIRED PRODUCT ADMINISTERED (9 adult patients (Not pregnant) received expired Bivalent Blue Cap booster doses of Moderna COVID-19 vaccine on 10JUN2023 through 24JUN2023/Dose administered after 30-day Use By Date) and PRODUCT STORAGE ERROR (Vial was initially stored in the refrigerator on 10-May-2023 and the vaccine was administered on 11-Jun-2023).    No concomitant medications were reported. None of the patients were pregnant. Suspect product dosage text was reported as unknown. The 2.5 ml vial was initially stored in the refrigerator on 10-MAY-2023 and did not underwent any temperature excursions. No treatment medications were reported.  This case contains information for the 4th of 09 patients described by the reporter.   This case was linked to US-MODERNATX, INC.-MOD-2023-732805 (Linked Report).; Sender's Comments:  US-MODERNATX, INC.-MOD-2023-732805:Master case