Diagnosis Codes Index - Diseases of the digestive system

    • ICD-9 Index

      • 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
          • 522 Diseases of pulp and periapical tissues
          • 523 Gingival and periodontal diseases
          • 524 Dentofacial anomalies, including malocclusion
          • 525 Other diseases and conditions of the teeth and 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 and tongue
          • 529 Diseases and other conditions of the tongue
        • Diseases of esophagus, stomach, and duodenum (530-539)

          • 530 Diseases of esophagus
          • 531 Gastric ulcer
          • 532 Duodenal ulcer
          • 533 Peptic ulcer, site unspecified
          • 534 Gastrojejunal ulcer
          • 535 Gastritis and duodenitis
          • 536 Disorders of function of stomach
          • 537 Other disorders of stomach and duodenum
          • 538 Gastrointestinal mucositis (ulcerative)
          • 539 Complications of bariatric procedures
        • Appendicitis (540-543)

          • 540 Acute appendicitis
          • 541 Appendicitis, unqualified
          • 542 Other appendicitis
          • 543 Other diseases of appendix
        • Hernia of abdominal cavity (550-553)

          • 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
        • Noninfective enteritis and colitis (555-558)

          • 555 Regional enteritis
          • 556 Ulcerative colitis
          • 557 Vascular insufficiency of intestine
          • 558 Other noninfective gastroenteritis and colitis
        • Other diseases of intestines and peritoneum (560-569)

          • 560 Intestinal obstruction without mention of hernia
          • 562 Diverticula of intestine
          • 564 Functional digestive disorders, not elsewhere classified
          • 565 Anal fissure and fistula
          • 566 Abscess of anal and rectal regions
          • 567 Peritonitis
          • 568 Other disorders of peritoneum
          • 569 Other disorders of intestine
        • Other diseases of digestive system (570-579)

          • 570 Acute and subacute necrosis of liver
          • 571 Chronic liver disease and cirrhosis
          • 572 Liver abscess and 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