Ulcer of esophagus

**Inclusion terms:** - Barrett's ulcer - Erosion of esophagus - Fungal ulcer of esophagus - Peptic ulcer of esophagus - Ulcer of esophagus due to ingestion of chemicals - Ulcer of esophagus due to ingestion of drugs and medicaments - Ulcerative esophagitis

**Excludes1:** - Barrett's esophagus (K22.7-)

**Code first:** - poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)

**Use additional code:** - code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)