医事 is read as いじ (iji) and means medical practice.
いじ
iji
いりょうじこ
medical error
いじそしょう
medical suit
いじほう
medical law
いじでんどう
medical missionary work
しゃかいふくしいりょうじぎょうだん
Social Welfare and Medical Service Corporation
じゅんいりょうかつどうじゅうじしゃ
paramedic
いがく
medical science
いしゃ
doctor
いだい
medical school
いいん
doctor's office
いちょう
medical director
い