K21 Gastro-oesophageal reflux disease
K21.0 Gastro-oesophageal reflux disease with oesophagitis
K25 Gastric ulcer
K25.7 Gastric ulcer : chronic without haemorrhage or perforation
K25.3 Gastric ulcer : acute without haemorrhage or perforation
K26 Duodenal ulcer
K26.7 Duodenal ulcer : chronic without haemorrhage or perforation
K26.3 Duodenal ulcer : acute without haemorrhage or perforation
K27 Peptic ulcer, site unspecified
K27.9 Peptic ulcer, site unspecified : unspecified as acute or chronic, without haemorrhage or perforation
K27.7 Peptic ulcer, site unspecified : chronic without haemorrhage or perforation
K29 Gastritis and duodenitis
K30 Functional dyspepsia
K44 Diaphragmatic hernia
K85 Acute pancreatitis
K86.1 Other chronic pancreatitis
R12 Heartburn