Heart had stopped for 4 minutes; Some coronary incident; went to emergency room because wasn't feeling well; Fractured ribs; This spontaneous case was reported by a pharmacist (subsequently medically confirmed) and describes the occurrence of CARDIAC ARREST (Heart had stopped for 4 minutes), CORONARY ARTERY DISEASE (Some coronary incident), MALAISE (went to emergency room because wasn't feeling well) and RIB FRACTURE (Fractured ribs) in a 90-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 036B21A) for COVID-19 vaccination.     The patient's past medical history included Multiple myeloma (Had multiple myeloma treatments in past 13 years and I'm in remission. Had multiple chemotherapies for them throughout since the year 2008.) in 2008.   On 09-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 10-Apr-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 24-Apr-2021, the patient experienced CARDIAC ARREST (Heart had stopped for 4 minutes) (seriousness criteria hospitalization, medically significant and life threatening), CORONARY ARTERY DISEASE (Some coronary incident) (seriousness criteria hospitalization, medically significant and life threatening), MALAISE (went to emergency room because wasn't feeling well) (seriousness criteria hospitalization, medically significant and life threatening) and RIB FRACTURE (Fractured ribs) (seriousness criteria hospitalization, medically significant and life threatening). The patient was hospitalized on 24-Apr-2021 due to CARDIAC ARREST, CORONARY ARTERY DISEASE, MALAISE and RIB FRACTURE. The patient was treated with Manual therapy (CPR) for Cardiac arrest and Rehabilitation therapy for Rib fracture. At the time of the report, CARDIAC ARREST (Heart had stopped for 4 minutes), CORONARY ARTERY DISEASE (Some coronary incident), MALAISE (went to emergency room because wasn't feeling well) and RIB FRACTURE (Fractured ribs) outcome was unknown.        For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   No relevant concomitant medications were provided.  The patient went to emergency room  because he wasn't feeling well. The patient was treated (details not provided) for 6-7 hours and assigned him the room. According to the patient, he did not remember anything after that. He woke up next day with all the tubes in him. Reportedly, his heart had stopped for 4 minutes and he had some coronary incident. The patient was given CPR to bring him back and due to that, he had fractured ribs. He was discharged after 5 days to a rehabilitation facility. No other information provided.  Action taken with mRNA-1273 in response to the events was not Applicable. Concomitant information not provided.  Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.; Sender's Comments: Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.