Diseases of esophagus, stomach and duodenum (K20-K31)

Diseases of the digestive system
- Diseases of esophagus, stomach and duodenum (K20-K31)
  - - K20 - Esophagitis
    - K20.0 - Eosinophilic esophagitis
    - K20.8 - Other esophagitis
    - K20.80 - Other esophagitis without bleeding
    - K20.81 - Other esophagitis with bleeding
    - K20.9 - Esophagitis, unspecified
    - K20.90 - Esophagitis, unspecified without bleeding
    - K20.91 - Esophagitis, unspecified with bleeding
  - - K21 - Gastro-esophageal reflux disease
    - K21.0 - Gastro-esophageal reflux disease with esophagitis
    - K21.00 - Gastro-esophageal reflux dis with esophagitis, without bleed
    - K21.01 - Gastro-esophageal reflux dis with esophagitis, with bleed
    - K21.9 - Gastro-esophageal reflux disease without esophagitis
  - - 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
    - K22.81 - Esophageal polyp
    - K22.82 - Esophagogastric junction polyp
    - K22.89 - Other specified disease of esophagus
    - K22.9 - Disease of esophagus, unspecified
  - - K23 - Disorders of esophagus in diseases classified elsewhere
  - - 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
  - - K30 - Functional dyspepsia
  - - 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
    - K31.A - Gastric intestinal metaplasia
    - K31.A0 - Gastric intestinal metaplasia, unspecified
    - K31.A1 - Gastric intestinal metaplasia without dysplasia
    - K31.A11 - Gastric intestnl metaplasia without dysplasia, w the antrum
    - K31.A12 - Gastr intestnl metaplasia w/o dysplasia, w the body (corpus)
    - K31.A13 - Gastric intestnl metaplasia without dysplasia, w the fundus
    - K31.A14 - Gastric intestnl metaplasia without dysplasia, w the cardia
    - K31.A15 - Gastric intestnl metaplasia without dysplasia, w mult sites
    - K31.A19 - Gastric intestinal metaplasia without dysplasia, unsp site
    - K31.A2 - Gastric intestinal metaplasia with dysplasia
    - K31.A21 - Gastric intestinal metaplasia with low grade dysplasia
    - K31.A22 - Gastric intestinal metaplasia with high grade dysplasia
    - K31.A29 - Gastric intestinal metaplasia with dysplasia, unspecified

Diseases of the digestive system