Helminthic (parasitic worm) infection, any organ(s)
Lip or mouth or tonsils or pharynx, primary malignancy
Colon (large intestine), primary malignancy
Peritoneal tissue/peritoneum, primary malignancy
Liver or biliary system, metastatic malignancy to it (also code primary site)
Gastrointestinal system NOS, metastatic malignancy to it (also code primary site)
Typhoid fever or Paratyphoid fever (due to Salmonella typhi or Salmonella enterica)
Shigellosis (dysentery due to Shigella species)
Clostridium difficile infection (C. diff)
Botulism (due to Clostridium botulinum toxin)
Food poisoning (due to foodborne bacterial toxin), NOS
Amoebiasis (amoebic dysentery due to Entamoeba histolytica)
Gastrointestinal infection (gastroenteritis, colitis), bug NOS
Gingivitis and periodontal diseases, acute or chronic
Disorder of teeth and supporting tissues, NOS
Disorder of oral mucosa (mouth, lips, tongue), NOS
Gastro-esophageal reflux disease (GERD), with or without esophagitis
Esophagus, obstruction or compression or stricture or stenosis
Perforation/rupture of esophagus, nontraumatic, NOS
Mallory-Weiss tear/syndrome, with or without hemorrhage
Peptic ulcer, site unspecified, with hemorrhage
Peptic ulcer, site unspecified, with perforation
Angiodysplasia of stomach or duodenum, with hemorrhage
Angiodysplasia of stomach or duodenum, without hemorrhage
Dieulafoy's lesion of stomach or duodenum, with hemorrhage
Appendicitis, with or without rupture or peritonitis
Abdominal hernia, with obstruction, incarceration or strangulation
Colitis or enteritis or gastroenteritis, due to radiation
Angiodysplasia of colon, with hemorrhage
Angiodysplasia of colon, without hemorrhage
Intestinal obstruction, NOS (small or large bowel)
Diverticulitis, small or large intestine (diverticular disease with perforation or abscess)
Diverticulosis, small or large intestine (diverticular disease without perforation or abscess)
Angiodysplasia of small intestine with hemorrhage
Angiodysplasia of small intestine without hemorrhage
Disorder of intestines (small or large intestine), NOS
Intestinal adhesion(s) without obstruction
Liver disease without liver failure, alcoholic
Liver disease without liver failure due to toxin/drug
Liver, nonalcoholic steatohepatosis (NASH)
Liver, chronic passive congestion, due to CHF
Cholelithiasis or choledolithiasis (gallstones), NOS
Cholelithiasis or choledolithiasis (gallstones), without obstruction
Cholelithiasis or choledolithiasis (gallstones), with obstruction of gallbladder or bile duct
Gallbladder or bile duct perforation or rupture
Celiac disease (celiac sprue, gluten-enteropathy)
Gastrointestinal hemorrhage (GI bleed), not specified if lower or upper
Mucositis/ulceration of digestive system, NOS
Scleroderma or CREST syndrome (systemic sclerosis)
Hyperemesis gravidarum (excessive vomiting in pregnancy)
Digestive system, congenital malformation
Budd-Chiari syndrome (thromboembolism of hepatic veins)
Gastric varices (with or without hemorrhage)
Osler-Weber-Rondu syndrome (Hereditary Hemorrhagic Telangiectasia)
Liver, biliary system, diagnostic imaging, abnormal
GI tract, NOS, diagnostic imaging, abnormal
Retroperitoneal area, diagnostic imaging, abnormal
Intrathoracic organ/structure NOS, wound/injury/laceration
Abdomen or lower back or pelvis, soft tissues, open wound, injury/trauma
Gallbladder or bile ducts, traumatic laceration/rupture
Gallbladder or bile ducts, wound/injury/trauma
Small intestine, traumatic laceration/rupture
Colon (large intestine), traumatic laceration/rupture
Intra-abdominal organ NOS, traumatic laceration/rupture
Intra-abdominal organ NOS, wound/injury/trauma NOS
Abdomen or lower back or pelvis NOS, wound/injury/trauma
Gastrointestinal (GI) tract, foreign body in
Liver transplant, failure or rejection or unspecified complication
Pancreas transplant, failure or rejection or unspecified complication
Past history, removal of any part of digestive tract
Colon (large intestine), wound/injury trauma
Liver failure w/wo hepatic encephalopathy, acute or subacute NOS
Liver failure w/wo hepatic encephalopathy, chronic NOS
Liver failure w/wo hepatic encephalopathy, not specified as acute or chronic
Aortic aneurysm, NOS without mention of rupture
Aortic aneurysm, thoracic without mention of rupture
Aortic aneurysm, abdominal without mention of rupture
Liver or biliary system, benign neoplasm
Colon (large intestine) or rectum or anus, benign neoplasm
Colitis, enteritis, enterocolitis, or gastroenteritis, noninfectious NOS
Gastrointestinal infection (gastroenteritis, colitis), viral
Gastrointestinal infection (gastroenteritis, colitis), protozoal, NOS
Gastrointestinal infection (gastroenteritis, colitis), bacterial, NOS
Past history, transplanted pancreas or islet cells
Liver failure due to toxin/drug NOS, w/wo hepatic encephalopathy
Liver failure, alcoholic, w/wo hepatic encephalopathy