K209 Esophagitis, unspecified K210 Gastro-esophageal reflux disease with esophagitis K219 Gastro-esophageal reflux disease without esophagitis K220 Achalasia of cardia K2210 Ulcer of esophagus without bleeding K2211 Ulcer of esophagus with bleeding K222 Esophageal obstruction K223 Perforation of esophagus...