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
• Anodontia
• Supernumerary teeth
• Abnormalities of size and form of teeth
• Mottled teeth
• Disturbances of tooth formation
• Hereditary disturbances in tooth structure not elsewhere classified
• Disturbances in tooth eruption
• Teething syndrome
• Diseases of hard tissues of teeth
• Dental caries
• Excessive attrition
• Abrasion of teeth
• Erosion of teeth
• Pathological tooth resorption
• Hypercementosis
• Ankylosis of teeth
• Intrinsic posteruptive color changes of teeth
• Other specified diseases of hard tissues of teeth - Cracked tooth
• Diseases of pulp and periapical tissues
• Gingival and periodontal diseases
• Gingivitis, chronic
• Dentofacial anomalies, including malocclusion
• Major anomalies of jaw size - Major anomalies of jaw size maxillary hypoplasia
• Anomalies of relationship of jaw to cranial base
• Anomalies of dental arch relationship
• Anomalies of tooth position of fully erupted teeth
• Malocclusion unspecified
• Dentofacial functional abnormalities
• Temporomandibular joint disorders
• Dental alveolar anomalies
• Other specified dentofacial anomalies
• Other diseases and conditions of the teeth and supporting structures
• Diseases of the jaws
• Developmental odontogenic cysts
• Fissural cysts of jaw
• Other cysts of jaws
• Central giant cell (reparative) granuloma
• Inflammatory conditions of jaw
• Alveolitis of jaw
• Periradicular pathology associated with previous endodontic treatment
• Other specified diseases of the jaws - Exostosis of jaw
• Diseases of the salivary glands
• Atrophy of salivary gland
• Hypertrophy of salivary gland
• Sialoadenitis
• Abscess of salivary gland
• Fistula of salivary gland
• Sialolithiasis
• Mucocele of salivary gland
• Disturbance of salivary secretion
• Diseases of the oral soft tissues, excluding lesions specific for gingiva and tongue
• Stomatitis
• Cancrum oris
• Aphthous ulcer, Oral aphthae
• Cellulitis and abscess of oral soft tissues
• Cysts of oral soft tissues
• Diseases of lips
• Leukoplakia of oral mucosa including tongue
• Leukoplakia, oral mucosa
• Other disturbances of oral epithelium including tongue - Erythroplakia
• Oral submucosal fibrosis, including of tongue
• Other and unspecified diseases of the oral soft tissues
• Diseases and other conditions of the tongue
• Glossitis

Diseases of [[esophagus]], [[stomach]], and [[duodenum]] (530–539)

• 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
• Gastrointestinal mucositis (ulcerative)
• Complications of bariatric procedures

[[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
• 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
  • , Peritonitis in infectious diseases classified elsewhere
  • , Pneumococcal peritonitis
  • , Other suppurative peritonitis
    • , Peritonitis (acute) generalized
    • , Peritoneal abscess
    • , Spontaneous bacterial peritonitis
  • , Retroperitoneal infections
    • , Psoas muscle abscess
• , 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)

Liver

• 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

Gallbladder

• Cholelithiasis
• Choledocholithiasis
• Other disorders of gallbladder
• Cholecystitis, acute
• Gallbladder disease, unspec.

Other biliary tract

• Other disorders of biliary tract
• Postcholecystectomy syndrome
• Cholangitis
• Obstruction of bile duct - Mirizzi's syndrome
• Perforation of bile duct
• Fistula of bile duct
• Spasm of sphincter of oddi

Other

• Diseases of pancreas
• Pancreatitis, acute
• Pancreatitis, chronic
• Pancreatic cyst, pseudocyst
• Gastrointestinal hemorrhage
• Hematemesis
• Blood in stool, melena
• Intestinal malabsorption
• Coeliac disease
• Tropical sprue
• Blind loop syndrome
• Other and unspecified postsurgical nonabsorption - Short bowel syndrome
• Pancreatic steatorrhea
• Other specified intestinal malabsorption - Protein losing enteropathy
• Unspecified intestinal malabsorption