Diseases of esophagus, stomach and duodenum (K20-K31)
K20Esophagitis
Use Additional Code: code to identify:
› alcohol abuse and dependence (F10.-)
Excludes 1: erosion of esophagus (K22.1-)
› esophagitis with gastro-esophageal reflux disease (K21.0-)
› reflux esophagitis (K21.0-)
› ulcerative esophagitis (K22.1-)
Excludes 2: eosinophilic gastritis or gastroenteritis (K52.81)
K20.0Eosinophilic esophagitis
K20.8Other esophagitis
K20.80Other esophagitis without bleeding
› Abscess of esophagus
› Other esophagitis NOS
K20.81Other esophagitis with bleeding
K20.9Esophagitis, unspecified
K20.90Esophagitis, unspecified without bleeding
› Esophagitis NOS
K20.91Esophagitis, unspecified with bleeding
K21Gastro-esophageal reflux disease
Excludes 1: newborn esophageal reflux (P78.83)
K21.0Gastro-esophageal reflux disease with esophagitis
K21.00Gastro-esophageal reflux disease with esophagitis, without bleeding
› Reflux esophagitis
K21.01Gastro-esophageal reflux disease with esophagitis, with bleeding
K21.9Gastro-esophageal reflux disease without esophagitis
› Esophageal reflux NOS
K22Other diseases of esophagus
Excludes 2: esophageal varices (I85.-)
K22.0Achalasia of cardia
› Achalasia NOS
› Cardiospasm
Excludes 1: congenital cardiospasm (Q39.5)
K22.1Ulcer of esophagus
› Barrett's ulcer
› Erosion of esophagus
› Fungal ulcer of esophagus
› Peptic ulcer of esophagus
› Ulcer of esophagus due to ingestion of chemicals
› Ulcer of esophagus due to ingestion of drugs and medicaments
› Ulcerative esophagitis
Code First: poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)
Use Additional Code: code for adverse effect, if applicable, to identify drug (T36-T50) with fifth or sixth character 5)
Excludes 1: Barrett's esophagus (K22.7-)
K22.10Ulcer of esophagus without bleeding
› Ulcer of esophagus NOS
K22.11Ulcer of esophagus with bleeding
Excludes 2: bleeding esophageal varices (I85.01, I85.11)
K22.2Esophageal obstruction
› Compression of esophagus
› Constriction of esophagus
› Stenosis of esophagus
› Stricture of esophagus
Excludes 1: congenital stenosis or stricture of esophagus (Q39.3)
K22.3Perforation of esophagus
› Rupture of esophagus
Excludes 1: traumatic perforation of (thoracic) esophagus (S27.8-)
K22.4Dyskinesia of esophagus
› Corkscrew esophagus
› Diffuse esophageal spasm
› Spasm of esophagus
Excludes 1: cardiospasm (K22.0)
K22.5Diverticulum of esophagus, acquired
› Esophageal pouch, acquired
Excludes 1: diverticulum of esophagus (congenital) (Q39.6)
K22.6Gastro-esophageal laceration-hemorrhage syndrome
› Mallory-Weiss syndrome
K22.7Barrett's esophagus
› Barrett's disease
› Barrett's syndrome
Excludes 1: Barrett's ulcer (K22.1)
› malignant neoplasm of esophagus (C15.-)
K22.70Barrett's esophagus without dysplasia
› Barrett's esophagus NOS
K22.71Barrett's esophagus with dysplasia
K22.710Barrett's esophagus with low grade dysplasia
K22.711Barrett's esophagus with high grade dysplasia
K22.719Barrett's esophagus with dysplasia, unspecified
K22.8Other specified diseases of esophagus
Excludes 2: esophageal varices (I85.-)
› Paterson-Kelly syndrome (D50.1)
K22.81Esophageal polyp
Excludes 1: benign neoplasm of esophagus (D13.0)
K22.82Esophagogastric junction polyp
Excludes 1: benign neoplasm of stomach (D13.1)
K22.89Other specified disease of esophagus
› Hemorrhage of esophagus NOS
K22.9Disease of esophagus, unspecified
K23Disorders of esophagus in diseases classified elsewhere
Code First: underlying disease, such as:
› congenital syphilis (A50.5)
Excludes 1: late syphilis (A52.79)
› megaesophagus due to Chagas' disease (B57.31)
› tuberculosis (A18.83)
K25Gastric ulcer
Includes: erosion (acute) of stomach
› pylorus ulcer (peptic)
› stomach ulcer (peptic)
Use Additional Code: code to identify:
› alcohol abuse and dependence (F10.-)
Excludes 1: acute gastritis (K29.0-)
› peptic ulcer NOS (K27.-)
K25.0Acute gastric ulcer with hemorrhage
K25.1Acute gastric ulcer with perforation
K25.2Acute gastric ulcer with both hemorrhage and perforation
K25.3Acute gastric ulcer without hemorrhage or perforation
K25.4Chronic or unspecified gastric ulcer with hemorrhage
K25.5Chronic or unspecified gastric ulcer with perforation
K25.6Chronic or unspecified gastric ulcer with both hemorrhage and perforation
K25.7Chronic gastric ulcer without hemorrhage or perforation
K25.9Gastric ulcer, unspecified as acute or chronic, without hemorrhage or perforation
K26Duodenal ulcer
Includes: erosion (acute) of duodenum
› duodenum ulcer (peptic)
› postpyloric ulcer (peptic)
Use Additional Code: code to identify:
› alcohol abuse and dependence (F10.-)
Excludes 1: peptic ulcer NOS (K27.-)
K26.0Acute duodenal ulcer with hemorrhage
K26.1Acute duodenal ulcer with perforation
K26.2Acute duodenal ulcer with both hemorrhage and perforation
K26.3Acute duodenal ulcer without hemorrhage or perforation
K26.4Chronic or unspecified duodenal ulcer with hemorrhage
K26.5Chronic or unspecified duodenal ulcer with perforation
K26.6Chronic or unspecified duodenal ulcer with both hemorrhage and perforation
K26.7Chronic duodenal ulcer without hemorrhage or perforation
K26.9Duodenal ulcer, unspecified as acute or chronic, without hemorrhage or perforation
K27Peptic ulcer, site unspecified
Includes: gastroduodenal ulcer NOS
› peptic ulcer NOS
Use Additional Code: code to identify:
› alcohol abuse and dependence (F10.-)
Excludes 1: peptic ulcer of newborn (P78.82)
K27.0Acute peptic ulcer, site unspecified, with hemorrhage
K27.1Acute peptic ulcer, site unspecified, with perforation
K27.2Acute peptic ulcer, site unspecified, with both hemorrhage and perforation
K27.3Acute peptic ulcer, site unspecified, without hemorrhage or perforation
K27.4Chronic or unspecified peptic ulcer, site unspecified, with hemorrhage
K27.5Chronic or unspecified peptic ulcer, site unspecified, with perforation
K27.6Chronic or unspecified peptic ulcer, site unspecified, with both hemorrhage and perforation
K27.7Chronic peptic ulcer, site unspecified, without hemorrhage or perforation
K27.9Peptic ulcer, site unspecified, unspecified as acute or chronic, without hemorrhage or perforation
K28Gastrojejunal ulcer
Includes: anastomotic ulcer (peptic) or erosion
› gastrocolic ulcer (peptic) or erosion
› gastrointestinal ulcer (peptic) or erosion
› gastrojejunal ulcer (peptic) or erosion
› jejunal ulcer (peptic) or erosion
› marginal ulcer (peptic) or erosion
› stomal ulcer (peptic) or erosion
Use Additional Code: code to identify:
› alcohol abuse and dependence (F10.-)
Excludes 1: primary ulcer of small intestine (K63.3)
K28.0Acute gastrojejunal ulcer with hemorrhage
K28.1Acute gastrojejunal ulcer with perforation
K28.2Acute gastrojejunal ulcer with both hemorrhage and perforation
K28.3Acute gastrojejunal ulcer without hemorrhage or perforation
K28.4Chronic or unspecified gastrojejunal ulcer with hemorrhage
K28.5Chronic or unspecified gastrojejunal ulcer with perforation
K28.6Chronic or unspecified gastrojejunal ulcer with both hemorrhage and perforation
K28.7Chronic gastrojejunal ulcer without hemorrhage or perforation
K28.9Gastrojejunal ulcer, unspecified as acute or chronic, without hemorrhage or perforation
K29Gastritis and duodenitis
Excludes 1: eosinophilic gastritis or gastroenteritis (K52.81)
› Zollinger-Ellison syndrome (E16.4)
K29.0Acute gastritis
Use Additional Code: code to identify:
› alcohol abuse and dependence (F10.-)
Excludes 1: erosion (acute) of stomach (K25.-)
K29.00Acute gastritis without bleeding
K29.01Acute gastritis with bleeding
K29.2Alcoholic gastritis
Use Additional Code: code to identify:
› alcohol abuse and dependence (F10.-)
K29.20Alcoholic gastritis without bleeding
K29.21Alcoholic gastritis with bleeding
K29.3Chronic superficial gastritis
K29.30Chronic superficial gastritis without bleeding
K29.31Chronic superficial gastritis with bleeding
K29.4Chronic atrophic gastritis
› Gastric atrophy
K29.40Chronic atrophic gastritis without bleeding
K29.41Chronic atrophic gastritis with bleeding
K29.5Unspecified chronic gastritis
› Chronic antral gastritis
› Chronic fundal gastritis
K29.50Unspecified chronic gastritis without bleeding
K29.51Unspecified chronic gastritis with bleeding
K29.6Other gastritis
› Giant hypertrophic gastritis
› Granulomatous gastritis
› Ménétrier's disease
K29.60Other gastritis without bleeding
K29.61Other gastritis with bleeding
K29.7Gastritis, unspecified
K29.70Gastritis, unspecified, without bleeding
K29.71Gastritis, unspecified, with bleeding
K29.8Duodenitis
K29.80Duodenitis without bleeding
K29.81Duodenitis with bleeding
K29.9Gastroduodenitis, unspecified
K29.90Gastroduodenitis, unspecified, without bleeding
K29.91Gastroduodenitis, unspecified, with bleeding
K30Functional dyspepsia
› Indigestion
Excludes 1: dyspepsia NOS (R10.13)
› heartburn (R12)
› nervous dyspepsia (F45.8)
› neurotic dyspepsia (F45.8)
› psychogenic dyspepsia (F45.8)
K31Other diseases of stomach and duodenum
Includes: functional disorders of stomach
Excludes 2: diabetic gastroparesis (E08.43, E09.43, E10.43, E11.43, E13.43)
› diverticulum of duodenum (K57.00-K57.13)
K31.0Acute dilatation of stomach
› Acute distention of stomach
K31.1Adult hypertrophic pyloric stenosis
› Pyloric stenosis NOS
Excludes 1: congenital or infantile pyloric stenosis (Q40.0)
K31.2Hourglass stricture and stenosis of stomach
Excludes 1: congenital hourglass stomach (Q40.2)
› hourglass contraction of stomach (K31.89)
K31.3Pylorospasm, not elsewhere classified
Excludes 1: congenital or infantile pylorospasm (Q40.0)
› neurotic pylorospasm (F45.8)
› psychogenic pylorospasm (F45.8)
K31.4Gastric diverticulum
Excludes 1: congenital diverticulum of stomach (Q40.2)
K31.5Obstruction of duodenum
› Constriction of duodenum
› Duodenal ileus (chronic)
› Stenosis of duodenum
› Stricture of duodenum
› Volvulus of duodenum
Excludes 1: congenital stenosis of duodenum (Q41.0)
K31.6Fistula of stomach and duodenum
› Gastrocolic fistula
› Gastrojejunocolic fistula
K31.7Polyp of stomach and duodenum
Excludes 1: adenomatous polyp of stomach (D13.1)
K31.8Other specified diseases of stomach and duodenum
K31.81Angiodysplasia of stomach and duodenum
K31.811Angiodysplasia of stomach and duodenum with bleeding
K31.819Angiodysplasia of stomach and duodenum without bleeding
› Angiodysplasia of stomach and duodenum NOS
K31.82Dieulafoy lesion (hemorrhagic) of stomach and duodenum
Excludes 2: Dieulafoy lesion of intestine (K63.81)
K31.83Achlorhydria
K31.84Gastroparesis
› Gastroparalysis
Code First: underlying disease, if known, such as:
› anorexia nervosa (F50.0-)
› diabetes mellitus (E08.43, E09.43, E10.43, E11.43, E13.43)
› scleroderma (M34.-)
K31.89Other diseases of stomach and duodenum
K31.9Disease of stomach and duodenum, unspecified
K31.AGastric intestinal metaplasia
K31.A0Gastric intestinal metaplasia, unspecified
› Gastric intestinal metaplasia indefinite for dysplasia
› Gastric intestinal metaplasia NOS
K31.A1Gastric intestinal metaplasia without dysplasia
K31.A11Gastric intestinal metaplasia without dysplasia, involving the antrum
K31.A12Gastric intestinal metaplasia without dysplasia, involving the body (corpus)
K31.A13Gastric intestinal metaplasia without dysplasia, involving the fundus
K31.A14Gastric intestinal metaplasia without dysplasia, involving the cardia
K31.A15Gastric intestinal metaplasia without dysplasia, involving multiple sites
K31.A19Gastric intestinal metaplasia without dysplasia, unspecified site
K31.A2Gastric intestinal metaplasia with dysplasia
K31.A21Gastric intestinal metaplasia with low grade dysplasia
K31.A22Gastric intestinal metaplasia with high grade dysplasia
K31.A29Gastric intestinal metaplasia with dysplasia, unspecified