K31

Other diseases of stomach and duodenum

functional disorders of stomach

diabetic gastroparesis (E08.43, E09.43, E10.43, E11.43, E13.43)
diverticulum of duodenum (K57.00-K57.13)

K31.0

Acute dilatation of stomach

Acute distention of stomach

K31.1

Adult hypertrophic pyloric stenosis

congenital or infantile pyloric stenosis (Q40.0)

Pyloric stenosis NOS

K31.2

Hourglass stricture and stenosis of stomach

congenital hourglass stomach (Q40.2)
hourglass contraction of stomach (K31.89)

K31.3

Pylorospasm, not elsewhere classified

congenital or infantile pylorospasm (Q40.0)
neurotic pylorospasm (F45.8)
psychogenic pylorospasm (F45.8)

K31.4

Gastric diverticulum

congenital diverticulum of stomach (Q40.2)

K31.5

Obstruction of duodenum

congenital stenosis of duodenum (Q41.0)

Constriction of duodenum
Duodenal ileus (chronic)
Stenosis of duodenum
Stricture of duodenum
Volvulus of duodenum

K31.6

Fistula of stomach and duodenum

Gastrocolic fistula
Gastrojejunocolic fistula

K31.7

Polyp of stomach and duodenum

adenomatous polyp of stomach (D13.1)

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

Angiodysplasia of stomach and duodenum NOS

K31.82

Dieulafoy lesion (hemorrhagic) of stomach and duodenum

Dieulafoy lesion of intestine (K63.81)

K31.83

Achlorhydria

K31.84

Gastroparesis

Gastroparalysis

K31.89

Other diseases of stomach and duodenum

K31.9

Disease of stomach and duodenum, unspecified