Diseases of esophagus, stomach and duodenum

Esophagitis

K20

Gastro-esophageal reflux disease

K21

Other diseases of esophagus

K22

Disorders of esophagus in diseases classified elsewhere

K23

Gastric ulcer

K25

Duodenal ulcer

K26

Peptic ulcer, site unspecified

K27

Gastrojejunal ulcer

K28

Gastritis and duodenitis

K29

Functional dyspepsia

K30

Other diseases of stomach and duodenum

K31