| MDC 6 Diseases & Disorders of the Digestive System |
| Major Gastrointestinal Disorders and Peritoneal Infections |
| A000 | Cholera due to Vibrio cholerae 01, biovar cholerae |
| A001 | Cholera due to Vibrio cholerae 01, biovar eltor |
| A009 | Cholera, unspecified |
| A020 | Salmonella enteritis |
| A030 | Shigellosis due to Shigella dysenteriae |
| A031 | Shigellosis due to Shigella flexneri |
| A032 | Shigellosis due to Shigella boydii |
| A033 | Shigellosis due to Shigella sonnei |
| A038 | Other shigellosis |
| A039 | Shigellosis, unspecified |
| A040 | Enteropathogenic Escherichia coli infection |
| A041 | Enterotoxigenic Escherichia coli infection |
| A042 | Enteroinvasive Escherichia coli infection |
| A043 | Enterohemorrhagic Escherichia coli infection |
| A044 | Other intestinal Escherichia coli infections |
| A045 | Campylobacter enteritis |
| A046 | Enteritis due to Yersinia enterocolitica |
| A047 | Enterocolitis due to Clostridium difficile |
| A048 | Other specified bacterial intestinal infections |
| A049 | Bacterial intestinal infection, unspecified |
| A050 | Foodborne staphylococcal intoxication |
| A052 | Foodborne Clostridium perfringens [Clostridium welchii] intoxication |
| A053 | Foodborne Vibrio parahaemolyticus intoxication |
| A054 | Foodborne Bacillus cereus intoxication |
| A055 | Foodborne Vibrio vulnificus intoxication |
| A058 | Other specified bacterial foodborne intoxications |
| A060 | Acute amebic dysentery |
| A061 | Chronic intestinal amebiasis |
| A062 | Amebic nondysenteric colitis |
| A070 | Balantidiasis |
| A071 | Giardiasis [lambliasis] |
| A072 | Cryptosporidiosis |
| A073 | Isosporiasis |
| A074 | Cyclosporiasis |
| A078 | Other specified protozoal intestinal diseases |
| A079 | Protozoal intestinal disease, unspecified |
| A1831 | Tuberculous peritonitis |
| A1832 | Tuberculous enteritis |
| A1839 | Retroperitoneal tuberculosis |
| A1883 | Tuberculosis of digestive tract organs, not elsewhere classified |
| A213 | Gastrointestinal tularemia |
| A222 | Gastrointestinal anthrax |
| A421 | Abdominal actinomycosis |
| A5485 | Gonococcal peritonitis |
| B690 | Cysticercosis of central nervous system |
| B691 | Cysticercosis of eye |
| B6981 | Myositis in cysticercosis |
| B6989 | Cysticercosis of other sites |
| B699 | Cysticercosis, unspecified |
| B701 | Sparganosis |
| B710 | Hymenolepiasis |
| B711 | Dipylidiasis |
| B718 | Other specified cestode infections |
| B719 | Cestode infection, unspecified |
| B760 | Ancylostomiasis |
| B761 | Necatoriasis |
| B768 | Other hookworm diseases |
| B769 | Hookworm disease, unspecified |
| K352 | Acute appendicitis with generalized peritonitis |
| K353 | Acute appendicitis with localized peritonitis |
| K630 | Abscess of intestine |
| K650 | Generalized (acute) peritonitis |
| K651 | Peritoneal abscess |
| K652 | Spontaneous bacterial peritonitis |
| K658 | Other peritonitis |
| K659 | Peritonitis, unspecified |
| K67 | Disorders of peritoneum in infectious diseases classified elsewhere |
| K6812 | Psoas muscle abscess |
| K6819 | Other retroperitoneal abscess |
| K689 | Other disorders of retroperitoneum |