Diseases of the digestive system (K00–K95)

Excludes2: certain conditions originating in the perinatal period (P04-P96), certain infectious and parasitic diseases (A00-B99), complications of pregnancy, childbirth and the puerperium (O00-O9A), congenital malformations, deformations and chromosomal abnormalities (Q00-Q99), endocrine, nutritional and metabolic diseases (E00-E88), injury, poisoning and certain other consequences of external causes (S00-T88), neoplasms (C00-D49)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

• Diseases of oral cavity and salivary glands (K00-K14)

  • Disorders of tooth development and eruption (K00)
  • Embedded and impacted teeth (K01)
  • Dental caries (K02)
  • Other diseases of hard tissues of teeth (K03)
  • Diseases of pulp and periapical tissues (K04)
  • Gingivitis and periodontal diseases (K05)
  • Other disorders of gingiva and edentulous alveolar ridge (K06)
  • Other disorders of teeth and supporting structures (K08)
  • Cysts of oral region, not elsewhere classified (K09)
  • Diseases of salivary glands (K11)
  • Stomatitis and related lesions (K12)
  • Other diseases of lip and oral mucosa (K13)
  • Diseases of tongue (K14)

• Diseases of esophagus, stomach and duodenum (K20-K31)

  • Esophagitis (K20)
  • Gastro-esophageal reflux disease (K21)
  • Other diseases of esophagus (K22)
  • Disorders of esophagus in diseases classified elsewhere (K23)
  • Gastric ulcer (K25)
  • Duodenal ulcer (K26)
  • Peptic ulcer, site unspecified (K27)
  • Gastrojejunal ulcer (K28)
  • Gastritis and duodenitis (K29)
  • Functional dyspepsia (K30)
  • Other diseases of stomach and duodenum (K31)

• Diseases of appendix (K35-K38)

  • Acute appendicitis (K35)
  • Other appendicitis (K36)
  • Unspecified appendicitis (K37)
  • Other diseases of appendix (K38)

• Hernia (K40-K46)

  • Inguinal hernia (K40)
  • Femoral hernia (K41)
  • Umbilical hernia (K42)
  • Ventral hernia (K43)
  • Diaphragmatic hernia (K44)
  • Other abdominal hernia (K45)
  • Unspecified abdominal hernia (K46)

• Noninfective enteritis and colitis (K50-K52)

  • Crohn's disease [regional enteritis] (K50)
  • Ulcerative colitis (K51)
  • Other and unspecified noninfective gastroenteritis and colitis (K52)

• Other diseases of intestines (K55-K64)

  • Vascular disorders of intestine (K55)
  • Paralytic ileus and intestinal obstruction without hernia (K56)
  • Diverticular disease of intestine (K57)
  • Irritable bowel syndrome (K58)
  • Other functional intestinal disorders (K59)
  • Fissure and fistula of anal and rectal regions (K60)
  • Abscess of anal and rectal regions (K61)
  • Other diseases of anus and rectum (K62)
  • Other diseases of intestine (K63)
  • Hemorrhoids and perianal venous thrombosis (K64)

• Diseases of peritoneum and retroperitoneum (K65-K68)

  • Peritonitis (K65)
  • Other disorders of peritoneum (K66)
  • Disorders of peritoneum in infectious diseases classified elsewhere (K67)
  • Disorders of retroperitoneum (K68)

• Diseases of liver (K70-K77)

  • Alcoholic liver disease (K70)
  • Toxic liver disease (K71)
  • Hepatic failure, not elsewhere classified (K72)
  • Chronic hepatitis, not elsewhere classified (K73)
  • Fibrosis and cirrhosis of liver (K74)
  • Other inflammatory liver diseases (K75)
  • Other diseases of liver (K76)
  • Liver disorders in diseases classified elsewhere (K77)

• Disorders of gallbladder, biliary tract and pancreas (K80-K87)

  • Cholelithiasis (K80)
  • Cholecystitis (K81)
  • Other diseases of gallbladder (K82)
  • Other diseases of biliary tract (K83)
  • Acute pancreatitis (K85)
  • Other diseases of pancreas (K86)
  • Disorders of gallbladder, biliary tract and pancreas in diseases classified elsewhere (K87)

• Other diseases of the digestive system (K90-K95)

  • Intestinal malabsorption (K90)
  • Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified (K91)
  • Other diseases of digestive system (K92)
  • Complications of artificial openings of the digestive system (K94)
  • Complications of bariatric procedures (K95)