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

# 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
- (521.0) Dental caries
- (522) Diseases of pulp and periapical tissues
- (523) Gingival and periodontal diseases
(523.1) Gingivitis, chronic
- (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
- (526.81) Torus Mandibularis, Torus palatinus
- (527) Diseases of the salivary glands
(527.2) Parotitis
- (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
- (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
- (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
- (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
- (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
- (535.0) Acute gastritis
- (535.6) Duodenitis
- (536) Disorders of function of stomach
(536.3) Gastroparesis
(536.8) Dyspepsia
- (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
- (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)
- (550) Inguinal hernia
(550.9) Hernia, inguinal, NOS, unilateral
- (550.9) Hernia, inguinal, NOS, unilateral
- (551) Other hernia of abdominal cavity, with gangrene
- (552) Other hernia of abdominal cavity with obstruction, without mention
- (553) Other hernia of abdominal cavity without mention of obstruction or
(553.0) Hernia, femoral, unilateral
(553.1) Hernia, umbilical
(553.2) Hernia, ventral, unspec.
(553.21) Hernia, ventral, incisional
(553.3) Hernia, hiatal, noncongenital
(553.9) Hernias, other, NOS
- (553.0) Hernia, femoral, unilateral
- (553.1) Hernia, umbilical
- (553.2) Hernia, ventral, unspec.
(553.21) Hernia, ventral, incisional
- (553.21) Hernia, ventral, incisional
- (553.3) Hernia, hiatal, noncongenital
- (553.9) Hernias, other, NOS

## 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
- (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.
- (556.9) Ulcerative colitis, unspec.
- (557) Vascular insufficiency of intestine
(557.0) Vascular insufficiency, acute, intestine
(557.9) Ischemic bowel disease, unspec.
- (557.0) Vascular insufficiency, acute, intestine
- (557.9) Ischemic bowel disease, unspec.
- (558) Other noninfectious gastroenteritis and colitis
(558.9) Gastroenteritis, noninfectious, unspec.
- (558.9) Gastroenteritis, noninfectious, unspec.

## other diseases of intestines and peritoneum (560-569)
- (560) Intestinal obstruction without mention of hernia
(560.1) Ileus
(560.3) Impaction of intestine
(560.9) Intestinal obstruction, unspec.
- (560.1) Ileus
- (560.3) Impaction of intestine
- (560.9) Intestinal obstruction, unspec.
- (562) Diverticula of intestine
(562.1) Diverticulosis of colon
(562.11) Diverticulitis of colon, NOS
(562.12) Diverticulosis, colon w/ hemorrhage
- (562.1) Diverticulosis of colon
(562.11) Diverticulitis of colon, NOS
(562.12) Diverticulosis, colon w/ hemorrhage
- (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
- (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
- (565.0) Anal fissure, nontraumatic
- (566) Abscess of anal and rectal regions
(566.0) Abscess, perianal
- (566.0) Abscess, perianal
- (567) Peritonitis
- (568) Other disorders of peritoneum
(568.0) Peritoneal adhesions
(568.8) Other specified disorders of peritoneum
Pneumoperitoneum
- (568.0) Peritoneal adhesions
- (568.8) Other specified disorders of peritoneum
Pneumoperitoneum
- Pneumoperitoneum
- (569) Other disorders of intestine
(569.3) Bleeding, rectal
(569.61) Infection, colostomy/enterostomy
(569.62) Mechanical complication of ostomy
(569.85) Angiodysplasia, intestine w/ hemorrhage
- (569.3) Bleeding, rectal
(569.61) Infection, colostomy/enterostomy
(569.62) Mechanical complication of ostomy
(569.85) Angiodysplasia, intestine w/ hemorrhage
- (569.61) Infection, colostomy/enterostomy
- (569.62) Mechanical complication of ostomy
- (569.85) Angiodysplasia, intestine w/ hemorrhage

## other diseases of digestive system (570-579)
- (570) Acute and subacute necrosis of liver
(570.0) Hepatic failure, acute
- (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.
- (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
- (572.2) Coma, hepatic
- (572.4) Hepatorenal syndrome
- (573) Other disorders of liver
(573.3) Hepatitis, toxic
- (573.3) Hepatitis, toxic
- (574) Cholelithiasis
(574.3) Choledocholithiasis
- (574.3) Choledocholithiasis
- (575) Other disorders of gallbladder
(575.0) Cholecystitis, acute
(575.9) Gallbladder disease, unspec.
- (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
- (576.1) Cholangitis
- (576.2) Obstruction of bile duct
Mirizzi's syndrome
- Mirizzi's syndrome
- (577) Diseases of pancreas
(577.0) Pancreatitis, acute
(577.1) Pancreatitis, chronic
(577.2) Pancreatic cyst, pseudocyst
- (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
- (578.0) Hematemesis
- (578.1) Blood in stool, melena
- (579) Intestinal malabsorption
(579.0) Coeliac disease
(579.9) Malabsorption, NOS
- (579.0) Coeliac disease
- (579.9) Malabsorption, NOS