Expired Vaccine used; This spontaneous case was reported by an other health care professional and describes the occurrence of EXPIRED PRODUCT ADMINISTERED (Expired Vaccine used) in a 78-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 038B21A, 010L21A and 004M20A) for COVID-19 vaccination.     The patient's past medical history included Uterine cancer. Previously administered products included for Drug use for unknown indication: Flu vaccine (Fluzone Series-3) on 29-Oct-2010, Tdap on 26-Aug-2014, Flu vaccine (Fluzone Series-4) on 09-Oct-2014, Adacel, Influenza (Series-1), Flu vaccine (H1N1 Series-2) and Pneumovax. Past adverse reactions to the above products included No adverse event with Adacel, Flu vaccine, Flu vaccine, Flu vaccine, Influenza, Pneumovax and Tdap. Concurrent medical conditions included Anxiety, Constipation, Subarachnoid hemorrhage, Vitamin D deficiency, Impaired fasting glucose, Vitamin B12 deficiency, Acute lymphadenitis, Pharyngitis (Acute), Cough, Upper respiratory infection, Mitral regurgitation, Rhinitis (Due to other allergen), Restless leg syndrome, Malar and maxillary bones, open fracture (Right, non displaced), Contusion (Scalp, left frontal), Hypoxemia, Snoring, Pulmonary hypertension (Secondary), Systolic murmur, Arthritis, Arthralgia, Bronchitis, Sinusitis, Melanoma, Pain in thumb (Left), Hypertension, Reactive airways disease, Rhinitis, Skull fracture (Frontal, extending left frontal/ethmoid sinus) and Drug allergy (Severe). Concomitant products included MULTIVITAMIN [VITAMINS NOS], ASPIRIN [ACETYLSALICYLIC ACID], FISH OIL, LOSARTAN POTASSIUM, CYANOCOBALAMIN (VITAMIN B-12), VITAMIN D3, FLUTICASONE PROPIONATE (FLONASE [FLUTICASONE PROPIONATE]), FEXOFENADINE HYDROCHLORIDE (ALLEGRA ALLERGY), METFORMIN HYDROCHLORIDE (GLUCOPHAGE XR), AMLODIPINE BESYLATE and HYDROCHLOROTHIAZIDE for an unknown indication.   On 28-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 24-Feb-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 10-Nov-2021, received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 10-Nov-2021, the patient experienced EXPIRED PRODUCT ADMINISTERED (Expired Vaccine used). On 10-Nov-2021, EXPIRED PRODUCT ADMINISTERED (Expired Vaccine used) had resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, C-reactive protein: elevated (High) Elevated. On an unknown date, Investigation: results not reported (Inconclusive) Screen colon cancer Results not reported, screen colon cancer (Inconclusive) Screen colon cancer Results not reported, results not reported (Inconclusive) Screen lung cancer Results not reported, results not reported (Inconclusive) Screen osteoporosis Results not reported, results not reported (Inconclusive) Screen osteoporosis Results not reported, results not reported (Inconclusive) Screen ovarian cancer Results not reported, results not reported (Inconclusive) Screen skin cancer Results not reported, results not reported (Inconclusive) Screening cervical cancer Results not reported and results not reported (Inconclusive) Screening for breast cancer Results not reported. On an unknown date, Laboratory test: results not reported (Inconclusive) Lab exam Results not reported. On an unknown date, Physical examination: results not reported (Inconclusive) Physical exam Results not reported.     For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   Problems include observation and evaluation for suspected exposure to other biological agent.  Treatment details were not provided.