ICDwise
K00–K95

Diseases of the Digestive System

GERD, IBS, liver disease, appendicitis

1,109 codes · FY2026 · ICD-10-CM · Page 8 of 23

K29.81 Duodenitis with bleeding Billable K29.9 Gastroduodenitis, unspecified Non-billable K29.90 Gastroduodenitis, unspecified, without bleeding Billable K29.91 Gastroduodenitis, unspecified, with bleeding Billable K30 Functional dyspepsia Billable K31 Other diseases of stomach and duodenum Non-billable K31.0 Acute dilatation of stomach Billable K31.1 Adult hypertrophic pyloric stenosis Billable K31.2 Hourglass stricture and stenosis of stomach Billable K31.3 Pylorospasm, not elsewhere classified Billable K31.4 Gastric diverticulum Billable K31.5 Obstruction of duodenum Billable K31.6 Fistula of stomach and duodenum Billable K31.7 Polyp of stomach and duodenum Billable K31.8 Other specified diseases of stomach and duodenum Non-billable K31.81 Angiodysplasia of stomach and duodenum Non-billable K31.811 Angiodysplasia of stomach and duodenum with bleeding Billable K31.819 Angiodysplasia of stomach and duodenum without bleeding Billable K31.82 Dieulafoy lesion (hemorrhagic) of stomach and duodenum Billable K31.83 Achlorhydria Billable K31.84 Gastroparesis Billable K31.89 Other diseases of stomach and duodenum Billable K31.9 Disease of stomach and duodenum, unspecified Billable K31.A Gastric intestinal metaplasia Non-billable K31.A0 Gastric intestinal metaplasia, unspecified Billable K31.A1 Gastric intestinal metaplasia without dysplasia Non-billable K31.A11 Gastric intestinal metaplasia without dysplasia, involving the antrum Billable K31.A12 Gastric intestinal metaplasia without dysplasia, involving the body (corpus) Billable K31.A13 Gastric intestinal metaplasia without dysplasia, involving the fundus Billable K31.A14 Gastric intestinal metaplasia without dysplasia, involving the cardia Billable K31.A15 Gastric intestinal metaplasia without dysplasia, involving multiple sites Billable K31.A19 Gastric intestinal metaplasia without dysplasia, unspecified site Billable K31.A2 Gastric intestinal metaplasia with dysplasia Non-billable K31.A21 Gastric intestinal metaplasia with low grade dysplasia Billable K31.A22 Gastric intestinal metaplasia with high grade dysplasia Billable K31.A29 Gastric intestinal metaplasia with dysplasia, unspecified Billable K35 Acute appendicitis Non-billable K35.2 Acute appendicitis with generalized peritonitis Non-billable K35.20 Acute appendicitis with generalized peritonitis, without abscess Non-billable K35.200 Acute appendicitis with generalized peritonitis, without perforation or abscess Billable K35.201 Acute appendicitis with generalized peritonitis, with perforation, without abscess Billable K35.209 Acute appendicitis with generalized peritonitis, without abscess, unspecified as to perforation Billable K35.21 Acute appendicitis with generalized peritonitis, with abscess Non-billable K35.210 Acute appendicitis with generalized peritonitis, without perforation, with abscess Billable K35.211 Acute appendicitis with generalized peritonitis, with perforation and abscess Billable K35.219 Acute appendicitis with generalized peritonitis, with abscess, unspecified as to perforation Billable K35.3 Acute appendicitis with localized peritonitis Non-billable K35.30 Acute appendicitis with localized peritonitis, without perforation or gangrene Billable K35.31 Acute appendicitis with localized peritonitis and gangrene, without perforation Billable K35.32 Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess Billable

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