• Diseases of the digestive system

        • K22 - Other diseases of esophagus
        • K22.0 - Achalasia of cardia
        • K22.1 - Ulcer of esophagus
        • K22.10 - Ulcer of esophagus without bleeding
        • K22.11 - Ulcer of esophagus with bleeding
        • K22.2 - Esophageal obstruction
        • K22.3 - Perforation of esophagus
        • K22.4 - Dyskinesia of esophagus
        • K22.5 - Diverticulum of esophagus, acquired
        • K22.6 - Gastro-esophageal laceration-hemorrhage syndrome
        • K22.7 - Barrett's esophagus
        • K22.70 - Barrett's esophagus without dysplasia
        • K22.71 - Barrett's esophagus with dysplasia
        • K22.710 - Barrett's esophagus with low grade dysplasia
        • K22.711 - Barrett's esophagus with high grade dysplasia
        • K22.719 - Barrett's esophagus with dysplasia, unspecified
        • K22.8 - Other specified diseases of esophagus
        • K22.9 - Disease of esophagus, unspecified
        • K25 - Gastric ulcer
        • K25.0 - Acute gastric ulcer with hemorrhage
        • K25.1 - Acute gastric ulcer with perforation
        • K25.2 - Acute gastric ulcer with both hemorrhage and perforation
        • K25.3 - Acute gastric ulcer without hemorrhage or perforation
        • K25.4 - Chronic or unspecified gastric ulcer with hemorrhage
        • K25.5 - Chronic or unspecified gastric ulcer with perforation
        • K25.6 - Chronic or unsp gastric ulcer w both hemorrhage and perf
        • K25.7 - Chronic gastric ulcer without hemorrhage or perforation
        • K25.9 - Gastric ulcer, unsp as acute or chronic, w/o hemor or perf
        • K26 - Duodenal ulcer
        • K26.0 - Acute duodenal ulcer with hemorrhage
        • K26.1 - Acute duodenal ulcer with perforation
        • K26.2 - Acute duodenal ulcer with both hemorrhage and perforation
        • K26.3 - Acute duodenal ulcer without hemorrhage or perforation
        • K26.4 - Chronic or unspecified duodenal ulcer with hemorrhage
        • K26.5 - Chronic or unspecified duodenal ulcer with perforation
        • K26.6 - Chronic or unsp duodenal ulcer w both hemorrhage and perf
        • K26.7 - Chronic duodenal ulcer without hemorrhage or perforation
        • K26.9 - Duodenal ulcer, unsp as acute or chronic, w/o hemor or perf
        • K27 - Peptic ulcer, site unspecified
        • K27.0 - Acute peptic ulcer, site unspecified, with hemorrhage
        • K27.1 - Acute peptic ulcer, site unspecified, with perforation
        • K27.2 - Acute peptic ulcer, site unsp, w both hemorrhage and perf
        • K27.3 - Acute peptic ulcer, site unsp, w/o hemorrhage or perforation
        • K27.4 - Chronic or unsp peptic ulcer, site unsp, with hemorrhage
        • K27.5 - Chronic or unsp peptic ulcer, site unsp, with perforation
        • K27.6 - Chr or unsp peptic ulcer, site unsp, w both hemor and perf
        • K27.7 - Chronic peptic ulcer, site unsp, w/o hemorrhage or perf
        • K27.9 - Peptic ulc, site unsp, unsp as ac or chr, w/o hemor or perf
        • K28 - Gastrojejunal ulcer
        • K28.0 - Acute gastrojejunal ulcer with hemorrhage
        • K28.1 - Acute gastrojejunal ulcer with perforation
        • K28.2 - Acute gastrojejunal ulcer w both hemorrhage and perforation
        • K28.3 - Acute gastrojejunal ulcer without hemorrhage or perforation
        • K28.4 - Chronic or unspecified gastrojejunal ulcer with hemorrhage
        • K28.5 - Chronic or unspecified gastrojejunal ulcer with perforation
        • K28.6 - Chronic or unsp gastrojejunal ulcer w both hemor and perf
        • K28.7 - Chronic gastrojejunal ulcer w/o hemorrhage or perforation
        • K28.9 - Gastrojejunal ulcer, unsp as acute or chr, w/o hemor or perf
        • K29 - Gastritis and duodenitis
        • K29.0 - Acute gastritis
        • K29.00 - Acute gastritis without bleeding
        • K29.01 - Acute gastritis with bleeding
        • K29.2 - Alcoholic gastritis
        • K29.20 - Alcoholic gastritis without bleeding
        • K29.21 - Alcoholic gastritis with bleeding
        • K29.3 - Chronic superficial gastritis
        • K29.30 - Chronic superficial gastritis without bleeding
        • K29.31 - Chronic superficial gastritis with bleeding
        • K29.4 - Chronic atrophic gastritis
        • K29.40 - Chronic atrophic gastritis without bleeding
        • K29.41 - Chronic atrophic gastritis with bleeding
        • K29.5 - Unspecified chronic gastritis
        • K29.50 - Unspecified chronic gastritis without bleeding
        • K29.51 - Unspecified chronic gastritis with bleeding
        • K29.6 - Other gastritis
        • K29.60 - Other gastritis without bleeding
        • K29.61 - Other gastritis with bleeding
        • K29.7 - Gastritis, unspecified
        • K29.70 - Gastritis, unspecified, without bleeding
        • K29.71 - Gastritis, unspecified, with bleeding
        • K29.8 - Duodenitis
        • K29.80 - Duodenitis without bleeding
        • K29.81 - Duodenitis with bleeding
        • K29.9 - Gastroduodenitis, unspecified
        • K29.90 - Gastroduodenitis, unspecified, without bleeding
        • K29.91 - Gastroduodenitis, unspecified, with bleeding
        • K31 - Other diseases of stomach and duodenum
        • K31.0 - Acute dilatation of stomach
        • K31.1 - Adult hypertrophic pyloric stenosis
        • K31.2 - Hourglass stricture and stenosis of stomach
        • K31.3 - Pylorospasm, not elsewhere classified
        • K31.4 - Gastric diverticulum
        • K31.5 - Obstruction of duodenum
        • K31.6 - Fistula of stomach and duodenum
        • K31.7 - Polyp of stomach and duodenum
        • K31.8 - Other specified diseases of stomach and duodenum
        • K31.81 - Angiodysplasia of stomach and duodenum
        • K31.811 - Angiodysplasia of stomach and duodenum with bleeding
        • K31.819 - Angiodysplasia of stomach and duodenum without bleeding
        • K31.82 - Dieulafoy lesion (hemorrhagic) of stomach and duodenum
        • K31.83 - Achlorhydria
        • K31.84 - Gastroparesis
        • K31.89 - Other diseases of stomach and duodenum
        • K31.9 - Disease of stomach and duodenum, unspecified