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

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

9. Diseases of the digestive system (520-579)

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

(520) Disorders of tooth development and eruption
(521) Diseases of hard tissues of teeth
- (521.0) Dental caries
(522) Diseases of pulp and periapical tissues
(523) Gingival and periodontal diseases
- (523.1) Gingivitis, chronic
(524) Dentofacial anomalies, including malocclusion
(525) Other diseases and conditions of the teeth and supporting structures
(526) Diseases of the jaws
- (526.81) Torus Mandibularis, Torus palatinus
(527) Diseases of the salivary glands
- (527.2) Parotitis
(528) Diseases of the oral soft tissues, excluding lesions specific for gingiva and tongue
- (528.0) Stomatitis
- (528.2) Aphthous ulcer
- (528.6) Leukoplakia, oral mucosa
- (528.7) Erythroplakia
(529) Diseases and other conditions of the tongue
- (529.0) Glossitis

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

(530) Diseases of esophagus
- (530.0) Achalasia/cardiospasm
- (530.1) Esophagitis, unspec.
- (530.3) Esophageal stricture/stenosis
- (530.8) Other specified disorders of esophagus
  - (530.81) Gastroesophageal reflux, no esophagitis
  - (530.85) Barrett's esophagitis
(531) Gastric ulcer
(532) Duodenal ulcer
(533) Peptic ulcer, site unspecified
(534) Gastrojejunal ulcer
(535) Gastritis and duodenitis
- (535.0) Acute gastritis
- (535.6) Duodenitis
(536) Disorders of function of stomach
- (536.3) Gastroparesis
- (536.8) Dyspepsia
(537) Other disorders of stomach and duodenum

appendicitis (540-543)

(540) Acute appendicitis
- (540.0) Appendicitis, acute w/ gen. peritonitis
- (540.9) Appendicitis, acute w/o peritonitis
(541) Appendicitis, unqualified
(542) Other appendicitis
(543) Other diseases of appendix

hernia of abdominal cavity (550-553)

noninfectious enteritis and colitis (555-558)

(555) Regional enteritis
- (555.0) Crohn's, small intestine
- (555.1) Crohn's, large intestine
- (555.9) Crohn's disease, NOS
(556) Idiopathic proctocolitis
- (556.9) Ulcerative colitis, unspec.
(557) Vascular insufficiency of intestine
- (557.0) Vascular insufficiency, acute, intestine
- (557.9) Ischemic bowel disease, unspec.
(558) Other noninfectious gastroenteritis and colitis
- (558.9) Gastroenteritis, noninfectious, unspec.

other diseases of intestines and peritoneum (560-569)

(560) Intestinal obstruction without mention of hernia
(562) Diverticula of intestine
- (562.1) Diverticulosis of colon
  - (562.11) Diverticulitis of colon, NOS
  - (562.12) Diverticulosis, colon w/ hemorrhage
(564) Functional digestive disorders, not elsewhere classified
- (564.0) Constipation, unspec.
- (564.1) Irritable bowel syndrome
- (564.2) Post-gastric-surgery syndromes
- (564.4) Postoperative functional disorders
- (564.6) Anal spasm
(565) Anal fissure and fistula
- (565.0) Anal fissure, nontraumatic
(566) Abscess of anal and rectal regions
- (566.0) Abscess, perianal
(567) Peritonitis
(568) Other disorders of peritoneum
- (568.0) Peritoneal adhesions
- (568.8) Other specified disorders of peritoneum
  - Pneumoperitoneum

(569) Other disorders of intestine
- (569.3) Bleeding, rectal

other diseases of digestive system (570-579)

(570) Acute and subacute necrosis of liver
- (570.0) Hepatic failure, acute
(571) Chronic liver disease and cirrhosis
- (571.0) Fatty liver, alcoholic
- (571.2) Cirrhosis, liver, alcoholic
- (571.4) Hepatitis, chronic, unspec.
- (571.5) Cirrhosis, NOS
- (571.6) Primary biliary cirrhosis
- (571.9) Liver disease, chronic, unspec.
(572) Liver abscess and sequelae of chronic liver disease
- (572.2) Coma, hepatic
- (572.4) Hepatorenal syndrome
(573) Other disorders of liver
- (573.3) Hepatitis, toxic
(574) Cholelithiasis
- (574.3) Choledocholithiasis
(575) Other disorders of gallbladder
- (575.0) Cholecystitis, acute
- (575.9) Gallbladder disease, unspec.

(576) Other disorders of biliary tract
- (576.1) Cholangitis
- (576.2) Obstruction of bile duct
  - Mirizzi's syndrome

(577) Diseases of pancreas
- (577.0) Pancreatitis, acute
- (577.1) Pancreatitis, chronic
- (577.2) Pancreatic cyst, pseudocyst
(578) Gastrointestinal hemorrhage
- (578.0) Hematemesis
- (578.1) Blood in stool, melena
(579) Intestinal malabsorption
- (579.0) Coeliac disease
- (579.9) Malabsorption, NOS

See also

List of ICD-9 codes

v • d • e

Oral Pathology: Stomatognathic disease (K00-K14, 520-529)

Developmental

Quantity	Anodontia/Hypodontia - Hyperdontia
Abnormalities of size and form	Concrescence - Fusion - Gemination - Dens evaginatus/Talon cusp - Dens invaginatus - Enamel pearl - Macrodontia - Microdontia - Taurodontism
Disturbances in formation	Dilaceration - Regional odontodysplasia - Turner's hypoplasia
Other hereditary disturbances in structure	Amelogenesis imperfecta - Dentinogenesis imperfecta - Dentin dysplasia

Other

Attrition - Abrasion - Ankylosis - Dental caries - Denticles - Erosion - External resorption - Fluorosis - Impaction - Internal resorption - Pulpitis - Toothache - Dentigerous cyst

Other Hard, Soft
and Periapical Tissues

Gingivitis - Periodontitis - Ulcer

Dentofacial Anomalies

Gnathitis - Micrognathism - Prognathism - Retrognathism
Malocclusion - Temporomandibular joint disorder

Maxillomandibular anomalies

Ameloblastoma - Cherubism - Congenital epulis - Odontogenic keratocyst - Torus mandibularis - Torus palatinus

Salivary glands

Sialadenitis - Drooling/sialorrhea - Benign lymphoepithelial lesion - Necrotizing sialometaplasia - Ranula - Sialolithiasis - Xerostomia

Lip and Oral mucosa

Cheilitis (Angular cheilitis) - Erythroplakia - Leukoplakia (Hairy leukoplakia) - White sponge nevus

Glossitis (Geographic tongue) - Fissured tongue - Glossodynia - Black hairy tongue

Other

Stomatitis (Aphthous ulcer)
Velopharyngeal inadequacy

see also neoplasia

v • d • e

Digestive system - Digestive disease - Gastroenterology (primarily K20-K93, 530-579)

Esophagus	Esophagitis (Candidal) - Boerhaave syndrome - UES (Zenker's diverticulum) - LES (Barrett's esophagus, Mallory-Weiss syndrome) - Esophageal motility disorder (Nutcracker esophagus, Achalasia, Diffuse esophageal spasm, GERD) - Esophageal stricture
Stomach	Peptic (gastric) ulcer - Gastritis (Atrophic, Ménétrier's disease) - Gastroenteritis - Dyspepsia - Pyloric stenosis - Achlorhydria - Gastroparesis - Gastroptosis - Portal hypertensive gastropathy - Gastric antral vascular ectasia - Gastric dumping syndrome

Duodenum/ileum	Peptic (duodenal) ulcer - Duodenitis - Ileitis
Enteritis & colitis/ enterocolitis	noninfective: IBD (Crohn's disease, Ulcerative colitis) - noninfective gastroenteritis infective: Pseudomembranous colitis
Vascular	Abdominal angina - Mesenteric ischemia - Ischemic colitis - Angiodysplasia
Malabsorption	Coeliac - Tropical sprue - Blind loop syndrome - Whipple's - Short bowel syndrome - Steatorrhea
Motility/ functional	Ileus/Bowel obstruction (Intussusception, Volvulus) - Constipation - Diarrhea Functional colonic disease (IBS, Intestinal pseudoobstruction/Ogilvie syndrome)
Rectum/anus	Proctalgia fugax - Anal fissure/Anal fistula - Anal abscess - Rectal prolapse - Proctitis (Radiation proctitis)
Other	Diverticulitis/Diverticulosis - Megacolon/Toxic megacolon - Appendicitis

Liver/hepatitis	Alcoholic liver disease - Liver failure (Hepatic encephalopathy, Acute liver failure) - Cirrhosis - autoimmune (PBC, Autoimmune hepatitis) - Liver abscess - NASH - Fatty liver - Peliosis hepatis - Hepatic veno-occlusive disease - Portal hypertension - Hepatorenal syndrome
Gallbladder	Gallstones - common bile duct (Choledocholithiasis, Biliary dyskinesia) - Cholecystitis - Cholesterolosis - Rokitansky-Aschoff sinuses - Postcholecystectomy syndrome
Biliary tree	Cholangitis (PSC, Ascending) - Cholestasis/Mirizzi's syndrome - Biliary fistula
Pancreatic	Pancreatitis (Acute, Chronic, Hereditary) - Pancreatic pseudocyst - Exocrine pancreatic insufficiency - Pancreatic fistula

Diaphragmatic: Congenital diaphragmatic - Hiatus

Abdominal hernia: Inguinal (Indirect, Direct) - Umbilical - Incisional - Femoral

Obturator hernia

Peritonitis (Spontaneous bacterial peritonitis) - Hemoperitoneum - Pneumoperitoneum

Upper (Hematemesis, Melena) - Lower (Hematochezia)

See also congenital, neoplasia

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