Certain infectious and parasitic diseases

K31.3 Pylorospasm, not elsewhere classified
Excludes: pylorospasm:
· congenital or infantile ( Q40.0 )
· neurotic ( F45.3 )
· psychogenic ( F45.3 )
K31.4 Gastric diverticulum
Excludes: congenital diverticulum of stomach ( Q40.2 )
K31.5 Obstruction of duodenum
Constriction
Stenosis of duodenum
Stricture
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Duodenal ileus (chronic)
Excludes: congenital stenosis of duodenum ( Q41.0 )
K31.6 Fistula of stomach and duodenum
Gastrocolic fistula
Gastrojejunocolic fistula
K31.7 Polyp of stomach and duodenum
Excludes: adenomatous polyp of stomach ( D13.1 )
K31.8 Other specified diseases of stomach and duodenum
Achlorhydria
Gastroptosis
Hourglass contraction of stomach
K31.9 Disease of stomach and duodenum, unspecified
Diseases of appendix
(K35-K38)
K35 Acute appendicitis
K35.0 Acute appendicitis with generalized peritonitis
Appendicitis (acute) with:
· perforation
· peritonitis (generalized)(localized) following rupture or perforation
· rupture
K35.1 Acute appendicitis with peritoneal abscess
Abscess of appendix
K35.9 Acute appendicitis, unspecified
Acute appendicitis with peritonitis, localized or NOS
Acute appendicitis without:
· generalized peritonitis
· perforation
· peritoneal abscess
· rupture
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