No adverse event; dose of Moderna Covid-19 vaccine that the patient received was 7 days past it's beyond use date; patient received a Moderna Covid-19 vaccine for her second dose of any Covid-19 vaccine The patient received a Pfizer vaccine for her first dose; Revaccination with different COVID-19 vaccine; This spontaneous case was reported by a pharmacist and describes the occurrence of EXPIRED PRODUCT ADMINISTERED (dose of Moderna Covid-19 vaccine that the patient received was 7 days past it's beyond use date), INTERCHANGE OF VACCINE PRODUCTS (patient received a Moderna Covid-19 vaccine for her second dose of any Covid-19 vaccine The patient received a Pfizer vaccine for her first dose), COVID-19 IMMUNISATION (Revaccination with different COVID-19 vaccine) and NO ADVERSE EVENT (No adverse event) in a 24-year-old female patient who received mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (batch no. 067H22A) for COVID-19 prophylaxis.     Previously administered products included for Product used for unknown indication: PFIZER BIONTECH COVID-19 VACCINE (first dose). Past adverse reactions to the above products included No adverse event with PFIZER BIONTECH COVID-19 VACCINE.    On 31-May-2023, the patient received second dose of mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (unknown route) 1 dosage form. On 31-May-2023, the patient experienced EXPIRED PRODUCT ADMINISTERED (dose of Moderna Covid-19 vaccine that the patient received was 7 days past it's beyond use date), INTERCHANGE OF VACCINE PRODUCTS (patient received a Moderna Covid-19 vaccine for her second dose of any Covid-19 vaccine The patient received a Pfizer vaccine for her first dose) and COVID-19 IMMUNISATION (Revaccination with different COVID-19 vaccine). On an unknown date, the patient experienced NO ADVERSE EVENT (No adverse event). At the time of the report, EXPIRED PRODUCT ADMINISTERED (dose of Moderna Covid-19 vaccine that the patient received was 7 days past it's beyond use date), INTERCHANGE OF VACCINE PRODUCTS (patient received a Moderna Covid-19 vaccine for her second dose of any Covid-19 vaccine The patient received a Pfizer vaccine for her first dose), COVID-19 IMMUNISATION (Revaccination with different COVID-19 vaccine) 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 (dose of Moderna Covid-19 vaccine that the patient received was 7 days past it's beyond use date), INTERCHANGE OF VACCINE PRODUCTS (patient received a Moderna Covid-19 vaccine for her second dose of any Covid-19 vaccine The patient received a Pfizer vaccine for her first dose) and COVID-19 IMMUNISATION (Revaccination with different COVID-19 vaccine).    No concomitant medication was reported. No information about previous COVID-19 vaccination doses were reported. It was reported that the patient received a Moderna Covid-19 vaccine for the second dose of Covid-19 vaccine. The patient received a Pfizer vaccine as the first dose and never went back for second dose of the Pfizer vaccine.  No other adverse reactions were reported. No treatment medication was reported.