ICD-9-CM International Classification of Diseases

520 Disorders of tooth development & eruption

521 Diseases of hard tissues of teeth
522 Diseases of pulp & periapical tissues
523 Gingival & periodontal diseases
524 Dentofacial anomalies, including malocclusion
525 Other diseases & conditions of the teeth & supporting structures
526 Diseases of the jaws
527 Diseases of the salivary glands
528 Diseases of the oral soft tissues, excluding lesions specific for gingiva & tongue
529 Diseases & other conditions of the tongue
530 Diseases of esophagus
531 Gastric ulcer
532 Duodenal ulcer
533 Peptic ulcer, site unspecified
534 Gastrojejunal ulcer
535 Gastritis & duodenitis
536 Disorders of function of stomach
537 Other disorders of stomach & duodenum
540 Acute appendicitis
541 Appendicitis, unqualified
542 Other appendicitis
543 Other diseases of appendix
550 Inguinal hernia
551 Other hernia of abdominal cavity, with gangrene
552 Other hernia of abdominal cavity, with obstruction, but without mention of gangrene
553 Other hernia of abdominal cavity without mention of obstruction or gangrene
555 Regional enteritis
556 Idiopathic proctocolitis
557 Vascular insufficiency of intestine
558 Other noninfectious gastroenteritis and colitis
560 Intestinal obstruction without mention of hernia
562 Diverticula of intestine
564 Functional digestive disorders, not elsewhere classified
565 Anal fissure & fistula
566 Abscess of anal & rectal regions
567 Peritonitis
568 Other disorders of peritoneum
569 Other disorders of intestine
570 Acute & subacute necrosis of liver
571 Chronic liver disease & cirrhosis
572 Liver abscess & sequelae of chronic liver disease
573 Other disorders of liver
574 Cholelithiasis
575 Other disorders of gallbladder
576 Other disorders of biliary tract
577 Diseases of pancreas
578 Gastrointestinal hemorrhage
579 Intestinal malabsorption