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

Browse all the diagnosis codes used for diseases of esophagus, stomach and duodenum (k20-k31). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.

Instructional Notations

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

  • hiatus hernia K44
  • Diseases of the digestive system (K00–K95)

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

        • Esophagitis (K20)

        • 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
        • Gastro-esophageal reflux disease (K21)

        • K21 Gastro-esophageal reflux disease
        • K21.0 Gastro-esophageal reflux disease with esophagitis
        • K21.00 Gastro-esophageal reflux disease with esophagitis, without bleeding
        • K21.01 Gastro-esophageal reflux disease with esophagitis, with bleeding
        • K21.9 Gastro-esophageal reflux disease without esophagitis
        • Other diseases of esophagus (K22)

        • 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
        • Gastric ulcer (K25)

        • 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 unspecified gastric ulcer with both hemorrhage and perforation
        • K25.7 Chronic gastric ulcer without hemorrhage or perforation
        • K25.9 Gastric ulcer, unspecified as acute or chronic, without hemorrhage or perforation
        • Duodenal ulcer (K26)

        • 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 unspecified duodenal ulcer with both hemorrhage and perforation
        • K26.7 Chronic duodenal ulcer without hemorrhage or perforation
        • K26.9 Duodenal ulcer, unspecified as acute or chronic, without hemorrhage or perforation
        • Peptic ulcer, site unspecified (K27)

        • 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 unspecified, with both hemorrhage and perforation
        • K27.3 Acute peptic ulcer, site unspecified, without hemorrhage or perforation
        • K27.4 Chronic or unspecified peptic ulcer, site unspecified, with hemorrhage
        • K27.5 Chronic or unspecified peptic ulcer, site unspecified, with perforation
        • K27.6 Chronic or unspecified peptic ulcer, site unspecified, with both hemorrhage and perforation
        • K27.7 Chronic peptic ulcer, site unspecified, without hemorrhage or perforation
        • K27.9 Peptic ulcer, site unspecified, unspecified as acute or chronic, without hemorrhage or perforation
        • Gastrojejunal ulcer (K28)

        • K28 Gastrojejunal ulcer
        • K28.0 Acute gastrojejunal ulcer with hemorrhage
        • K28.1 Acute gastrojejunal ulcer with perforation
        • K28.2 Acute gastrojejunal ulcer with 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 unspecified gastrojejunal ulcer with both hemorrhage and perforation
        • K28.7 Chronic gastrojejunal ulcer without hemorrhage or perforation
        • K28.9 Gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation
        • Gastritis and duodenitis (K29)

        • 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
        • Other diseases of stomach and duodenum (K31)

        • 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 intestinal metaplasia without dysplasia, involving the antrum
        • K31.A12 Gastric intestinal metaplasia without dysplasia, involving the body (corpus)
        • K31.A13 Gastric intestinal metaplasia without dysplasia, involving the fundus
        • K31.A14 Gastric intestinal metaplasia without dysplasia, involving the cardia
        • K31.A15 Gastric intestinal metaplasia without dysplasia, involving multiple sites
        • K31.A19 Gastric intestinal metaplasia without dysplasia, unspecified 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