• Diseases of the digestive system

        • 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