| A00 | Cholera |
| A00.0 | Cholera due to Vibrio cholerae 01, biovar cholerae |
| A00.1 | Cholera due to Vibrio cholerae 01, biovar eltor |
| A00.9 | Cholera, unspecified |
| A01 | Typhoid and paratyphoid fevers |
| A01.0 | Typhoid fever |
| A01.00 | Typhoid fever, unspecified |
| A01.01 | Typhoid meningitis |
| A01.02 | Typhoid fever with heart involvement |
| A01.03 | Typhoid pneumonia |
| A01.04 | Typhoid arthritis |
| A01.05 | Typhoid osteomyelitis |
| A01.09 | Typhoid fever with other complications |
| A01.1 | Paratyphoid fever A |
| A01.2 | Paratyphoid fever B |
| A01.3 | Paratyphoid fever C |
| A01.4 | Paratyphoid fever, unspecified |
| A02 | Other salmonella infections |
| A02.0 | Salmonella enteritis |
| A02.1 | Salmonella sepsis |
| A02.2 | Localized salmonella infections |
| A02.20 | Localized salmonella infection, unspecified |
| A02.21 | Salmonella meningitis |
| A02.22 | Salmonella pneumonia |
| A02.23 | Salmonella arthritis |
| A02.24 | Salmonella osteomyelitis |
| A02.25 | Salmonella pyelonephritis |
| A02.29 | Salmonella with other localized infection |
| A02.8 | Other specified salmonella infections |
| A02.9 | Salmonella infection, unspecified |
| A03 | Shigellosis |
| A03.0 | Shigellosis due to Shigella dysenteriae |
| A03.1 | Shigellosis due to Shigella flexneri |
| A03.2 | Shigellosis due to Shigella boydii |
| A03.3 | Shigellosis due to Shigella sonnei |
| A03.8 | Other shigellosis |
| A03.9 | Shigellosis, unspecified |
| A04 | Other bacterial intestinal infections |
| A04.0 | Enteropathogenic Escherichia coli infection |
| A04.1 | Enterotoxigenic Escherichia coli infection |
| A04.2 | Enteroinvasive Escherichia coli infection |
| A04.3 | Enterohemorrhagic Escherichia coli infection |
| A04.4 | Other intestinal Escherichia coli infections |
| A04.5 | Campylobacter enteritis |
| A04.6 | Enteritis due to Yersinia enterocolitica |
| A04.7 | Enterocolitis due to Clostridium difficile |
| A04.8 | Other specified bacterial intestinal infections |
| A04.9 | Bacterial intestinal infection, unspecified |
| A05 | Other bacterial foodborne intoxications, not elsewhere classified |
| A05.0 | Foodborne staphylococcal intoxication |
| A05.1 | Botulism food poisoning |
| A05.2 | Foodborne Clostridium perfringens [Clostridium welchii] intoxication |
| A05.3 | Foodborne Vibrio parahaemolyticus intoxication |
| A05.4 | Foodborne Bacillus cereus intoxication |
| A05.5 | Foodborne Vibrio vulnificus intoxication |
| A05.8 | Other specified bacterial foodborne intoxications |
| A05.9 | Bacterial foodborne intoxication, unspecified |
| A06 | Amebiasis |
| A06.0 | Acute amebic dysentery |
| A06.1 | Chronic intestinal amebiasis |
| A06.2 | Amebic nondysenteric colitis |
| A06.3 | Ameboma of intestine |
| A06.4 | Amebic liver abscess |
| A06.5 | Amebic lung abscess |
| A06.6 | Amebic brain abscess |
| A06.7 | Cutaneous amebiasis |
| A06.8 | Amebic infection of other sites |
| A06.81 | Amebic cystitis |
| A06.82 | Other amebic genitourinary infections |
| A06.89 | Other amebic infections |
| A06.9 | Amebiasis, unspecified |
| A07 | Other protozoal intestinal diseases |
| A07.0 | Balantidiasis |
| A07.1 | Giardiasis [lambliasis] |
| A07.2 | Cryptosporidiosis |
| A07.3 | Isosporiasis |
| A07.4 | Cyclosporiasis |
| A07.8 | Other specified protozoal intestinal diseases |
| A07.9 | Protozoal intestinal disease, unspecified |
| A08 | Viral and other specified intestinal infections |
| A08.0 | Rotaviral enteritis |
| A08.1 | Acute gastroenteropathy due to Norwalk agent and other small round viruses |
| A08.11 | Acute gastroenteropathy due to Norwalk agent |
| A08.19 | Acute gastroenteropathy due to other small round viruses |
| A08.2 | Adenoviral enteritis |
| A08.3 | Other viral enteritis |
| A08.31 | Calicivirus enteritis |
| A08.32 | Astrovirus enteritis |
| A08.39 | Other viral enteritis |
| A08.4 | Viral intestinal infection, unspecified |
| A08.8 | Other specified intestinal infections |
| A09 | Infectious gastroenteritis and colitis, unspecified |