L arm of injection swollen; L arm of injection hot to touch; L arm of injection itchy; L arm of injection with a red mark and a bump; L arm of injection with a red mark and a bump; This spontaneous case was reported by a consumer and describes the occurrence of VACCINATION SITE SWELLING (L arm of injection swollen), VACCINATION SITE WARMTH (L arm of injection hot to touch), VACCINATION SITE PRURITUS (L arm of injection itchy), VACCINATION SITE ERYTHEMA (L arm of injection with a red mark and a bump) and VACCINATION SITE INDURATION (L arm of injection with a red mark and a bump) in a 33-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 039A21A) for COVID-19 vaccination.     The patient's past medical history included Hypertension since an unknown date and Tachycardia since an unknown date. Concomitant products included ETHINYLESTRADIOL, NORGESTIMATE (MILI [ETHINYLESTRADIOL;NORGESTIMATE]) for Birth control, HYDROCHLOROTHIAZIDE (MICROZIDE [HYDROCHLOROTHIAZIDE]) for Hypertension, METOPROLOL for Tachycardia, WOMAN VITAL MENOX and BIOTIN (HAIR, SKIN & NAILS [BIOTIN]) for an unknown indication.    On 05-Apr-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 05-Apr-2021, the patient experienced VACCINATION SITE SWELLING (L arm of injection swollen), VACCINATION SITE WARMTH (L arm of injection hot to touch), VACCINATION SITE PRURITUS (L arm of injection itchy), VACCINATION SITE ERYTHEMA (L arm of injection with a red mark and a bump) and VACCINATION SITE INDURATION (L arm of injection with a red mark and a bump). At the time of the report, VACCINATION SITE SWELLING (L arm of injection swollen), VACCINATION SITE WARMTH (L arm of injection hot to touch), VACCINATION SITE PRURITUS (L arm of injection itchy), VACCINATION SITE ERYTHEMA (L arm of injection with a red mark and a bump) and VACCINATION SITE INDURATION (L arm of injection with a red mark and a bump) was resolving. Not Provided      The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.        No treatment information was provided. This case was received via an unknown source (no reference has been entered for a health authority or license partner) on 14-Apr-2021 and was forwarded to Moderna on 14-Apr-2021.    This spontaneous case was reported by a consumer and describes the occurrence of VACCINATION SITE SWELLING (L arm of injection swollen), VACCINATION SITE WARMTH (L arm of injection hot to touch), VACCINATION SITE PRURITUS (L arm of injection itchy), VACCINATION SITE ERYTHEMA (L arm of injection with a red mark and a bump) and VACCINATION SITE INDURATION (L arm of injection with a red mark and a bump) in a 33-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 039A21A) for COVID-19 vaccination.     The patient's past medical history included Hypertension since an unknown date and Tachycardia since an unknown date. Concomitant products included ETHINYLESTRADIOL, NORGESTIMATE (MILI [ETHINYLESTRADIOL;NORGESTIMATE]) for Birth control, HYDROCHLOROTHIAZIDE (MICROZIDE [HYDROCHLOROTHIAZIDE]) for Hypertension, METOPROLOL for Tachycardia, WOMAN VITAL MENOX and BIOTIN (HAIR, SKIN & NAILS [BIOTIN]) for an unknown indication.    On 05-Apr-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 05-Apr-2021, the patient experienced VACCINATION SITE SWELLING (L arm of injection swollen), VACCINATION SITE WARMTH (L arm of injection hot to touch), VACCINATION SITE PRURITUS (L arm of injection itchy), VACCINATION SITE ERYTHEMA (L arm of injection with a red mark and a bump) and VACCINATION SITE INDURATION (L arm of injection with a red mark and a bump). At the time of the report, VACCINATION SITE SWELLING (L arm of injection swollen), VACCINATION SITE WARMTH (L arm of injection hot to touch), VACCINATION SITE PRURITUS (L arm of injection itchy), VACCINATION SITE ERYTHEMA (L arm of injection with a red mark and a bump) and VACCINATION SITE INDURATION (L arm of injection with a red mark and a bump) was resolving. Not Provided      The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.        No treatment information was provided.