List of ICD-9 codes 520-579: Diseases of the digestive system

diseases of oral cavity, salivary glands, and jaws (520-529)

 * Disorders of tooth development and eruption
 * Diseases of hard tissues of teeth
 * Dental caries
 * Diseases of pulp and periapical tissues
 * Gingival and periodontal diseases
 * Gingivitis, chronic
 * Dentofacial anomalies, including malocclusion
 * Other diseases and conditions of the teeth and supporting structures
 * Diseases of the jaws
 * Torus Mandibularis, Torus palatinus
 * Diseases of the salivary glands
 * Parotitis
 * Diseases of the oral soft tissues, excluding lesions specific for gingiva and tongue
 * Stomatitis
 * Aphthous ulcer
 * Leukoplakia, oral mucosa
 * Erythroplakia
 * Diseases and other conditions of the tongue
 * Glossitis

diseases of esophagus, stomach, and duodenum (530-537)

 * Diseases of esophagus
 * Achalasia/cardiospasm
 * Esophagitis, unspec.
 * Esophageal stricture/stenosis
 * Other specified disorders of esophagus
 * Gastroesophageal reflux, no esophagitis
 * Barrett's esophagitis
 * Gastric ulcer
 * Duodenal ulcer
 * Peptic ulcer, site unspecified
 * Gastrojejunal ulcer
 * Gastritis and duodenitis
 * Acute gastritis
 * Duodenitis
 * Disorders of function of stomach
 * Gastroparesis
 * Dyspepsia
 * Other disorders of stomach and duodenum

appendicitis (540-543)

 * Acute appendicitis
 * Appendicitis, acute w/ gen. peritonitis
 * Appendicitis, acute w/o peritonitis
 * Appendicitis, unqualified
 * Other appendicitis
 * Other diseases of appendix

hernia of abdominal cavity (550-553)

 * Inguinal hernia
 * Hernia, inguinal, NOS, unilateral
 * Other hernia of abdominal cavity, with gangrene
 * Other hernia of abdominal cavity with obstruction, without mention
 * Other hernia of abdominal cavity without mention of obstruction or
 * Hernia, femoral, unilateral
 * Hernia, umbilical
 * Hernia, ventral, unspec.
 * Hernia, ventral, incisional
 * Hernia, hiatal, noncongenital
 * Hernias, other, NOS

noninfectious enteritis and colitis (555-558)

 * Regional enteritis
 * Crohn's, small intestine
 * Crohn's, large intestine
 * Crohn's disease, NOS
 * Idiopathic proctocolitis
 * Ulcerative colitis, unspec.
 * Vascular insufficiency of intestine
 * Vascular insufficiency, acute, intestine
 * Ischemic bowel disease, unspec.
 * Other noninfectious gastroenteritis and colitis
 * Gastroenteritis, noninfectious, unspec.

other diseases of intestines and peritoneum (560-569)

 * Intestinal obstruction without mention of hernia
 * Ileus
 * Impaction of intestine
 * Intestinal obstruction, unspec.
 * Diverticula of intestine
 * Diverticulosis of colon
 * Diverticulitis of colon, NOS
 * Diverticulosis, colon w/ hemorrhage
 * Functional digestive disorders, not elsewhere classified
 * Constipation, unspec.
 * Irritable bowel syndrome
 * Post-gastric-surgery syndromes
 * Postoperative functional disorders
 * Anal spasm
 * Anal fissure and fistula
 * Anal fissure, nontraumatic
 * Abscess of anal and rectal regions
 * Abscess, perianal
 * Peritonitis
 * Other disorders of peritoneum
 * Peritoneal adhesions
 * Other specified disorders of peritoneum
 * Pneumoperitoneum


 * Other disorders of intestine
 * Bleeding, rectal
 * Infection, colostomy/enterostomy
 * Mechanical complication of ostomy
 * Angiodysplasia, intestine w/ hemorrhage

other diseases of digestive system (570-579)

 * Acute and subacute necrosis of liver
 * Hepatic failure, acute
 * Chronic liver disease and cirrhosis
 * Fatty liver, alcoholic
 * Cirrhosis, liver, alcoholic
 * Hepatitis, chronic, unspec.
 * Cirrhosis, NOS
 * Primary biliary cirrhosis
 * Liver disease, chronic, unspec.
 * Liver abscess and sequelae of chronic liver disease
 * Coma, hepatic
 * Hepatorenal syndrome
 * Other disorders of liver
 * Hepatitis, toxic
 * Cholelithiasis
 * Choledocholithiasis
 * Other disorders of gallbladder
 * Cholecystitis, acute
 * Gallbladder disease, unspec.


 * Other disorders of biliary tract
 * Cholangitis
 * Obstruction of bile duct
 * Mirizzi's syndrome


 * Diseases of pancreas
 * Pancreatitis, acute
 * Pancreatitis, chronic
 * Pancreatic cyst, pseudocyst
 * Gastrointestinal hemorrhage
 * Hematemesis
 * Blood in stool, melena
 * Intestinal malabsorption
 * Coeliac disease
 * Malabsorption, NOS