A00-A09
Intestinal infectious diseases
Codes in this block
94 codes
Billableusable codeNon-billableheader / grouping codeRisk-adjusting
- A00CholeraNon-billable
- A00.0Cholera due to Vibrio cholerae 01, biovar choleraeBillable
- A00.1Cholera due to Vibrio cholerae 01, biovar eltorBillable
- A00.9Cholera, unspecifiedBillable
- A01Typhoid and paratyphoid feversNon-billable
- A01.0Typhoid feverNon-billable
- A01.00Typhoid fever, unspecifiedBillable
- A01.01Typhoid meningitisBillable
- A01.02Typhoid fever with heart involvementBillable
- A01.03Typhoid pneumoniaBillable
- A01.04Typhoid arthritisBillable
- A01.05Typhoid osteomyelitisBillable
- A01.09Typhoid fever with other complicationsBillable
- A01.1Paratyphoid fever ABillable
- A01.2Paratyphoid fever BBillable
- A01.3Paratyphoid fever CBillable
- A01.4Paratyphoid fever, unspecifiedBillable
- A02Other salmonella infectionsNon-billable
- A02.0Salmonella enteritisBillable
- A02.1Salmonella sepsisBillable
- A02.2Localized salmonella infectionsNon-billable
- A02.20Localized salmonella infection, unspecifiedBillable
- A02.21Salmonella meningitisBillable
- A02.22Salmonella pneumoniaBillable
- A02.23Salmonella arthritisBillable
- A02.24Salmonella osteomyelitisBillable
- A02.25Salmonella pyelonephritisBillable
- A02.29Salmonella with other localized infectionBillable
- A02.8Other specified salmonella infectionsBillable
- A02.9Salmonella infection, unspecifiedBillable
- A03ShigellosisNon-billable
- A03.0Shigellosis due to Shigella dysenteriaeBillable
- A03.1Shigellosis due to Shigella flexneriBillable
- A03.2Shigellosis due to Shigella boydiiBillable
- A03.3Shigellosis due to Shigella sonneiBillable
- A03.8Other shigellosisBillable
- A03.9Shigellosis, unspecifiedBillable
- A04Other bacterial intestinal infectionsNon-billable
- A04.0Enteropathogenic Escherichia coli infectionBillable
- A04.1Enterotoxigenic Escherichia coli infectionBillable
- A04.2Enteroinvasive Escherichia coli infectionBillable
- A04.3Enterohemorrhagic Escherichia coli infectionBillable
- A04.4Other intestinal Escherichia coli infectionsBillable
- A04.5Campylobacter enteritisBillable
- A04.6Enteritis due to Yersinia enterocoliticaBillable
- A04.7Enterocolitis due to Clostridium difficileNon-billable
- A04.71Enterocolitis due to Clostridium difficile, recurrentBillable
- A04.72Enterocolitis due to Clostridium difficile, not specified as recurrentBillable
- A04.8Other specified bacterial intestinal infectionsBillable
- A04.9Bacterial intestinal infection, unspecifiedBillable
- A05Other bacterial foodborne intoxications, not elsewhere classifiedNon-billable
- A05.0Foodborne staphylococcal intoxicationBillable
- A05.1Botulism food poisoningBillable
- A05.2Foodborne Clostridium perfringens [Clostridium welchii] intoxicationBillable
- A05.3Foodborne Vibrio parahaemolyticus intoxicationBillable
- A05.4Foodborne Bacillus cereus intoxicationBillable
- A05.5Foodborne Vibrio vulnificus intoxicationBillable
- A05.8Other specified bacterial foodborne intoxicationsBillable
- A05.9Bacterial foodborne intoxication, unspecifiedBillable
- A06AmebiasisNon-billable
- A06.0Acute amebic dysenteryBillable
- A06.1Chronic intestinal amebiasisBillable
- A06.2Amebic nondysenteric colitisBillable
- A06.3Ameboma of intestineBillable
- A06.4Amebic liver abscessBillable
- A06.5Amebic lung abscessBillable
- A06.6Amebic brain abscessBillable
- A06.7Cutaneous amebiasisBillable
- A06.8Amebic infection of other sitesNon-billable
- A06.81Amebic cystitisBillable
- A06.82Other amebic genitourinary infectionsBillable
- A06.89Other amebic infectionsBillable
- A06.9Amebiasis, unspecifiedBillable
- A07Other protozoal intestinal diseasesNon-billable
- A07.0BalantidiasisBillable
- A07.1Giardiasis [lambliasis]Billable
- A07.2CryptosporidiosisBillable
- A07.3IsosporiasisBillable
- A07.4CyclosporiasisBillable
- A07.8Other specified protozoal intestinal diseasesBillable
- A07.9Protozoal intestinal disease, unspecifiedBillable
- A08Viral and other specified intestinal infectionsNon-billable
- A08.0Rotaviral enteritisBillable
- A08.1Acute gastroenteropathy due to Norwalk agent and other small round virusesNon-billable
- A08.11Acute gastroenteropathy due to Norwalk agentBillable
- A08.19Acute gastroenteropathy due to other small round virusesBillable
- A08.2Adenoviral enteritisBillable
- A08.3Other viral enteritisNon-billable
- A08.31Calicivirus enteritisBillable
- A08.32Astrovirus enteritisBillable
- A08.39Other viral enteritisBillable
- A08.4Viral intestinal infection, unspecifiedBillable
- A08.8Other specified intestinal infectionsBillable
- A09Infectious gastroenteritis and colitis, unspecifiedBillable
Official Guidelines for A00-A09
FY 2026 ›I.C.1Chapter-specific guidanceChapter 1: Certain Infectious and Parasitic Diseases (A00-B99), U07.1, U09.9
Subsections
- I.C.1.aHuman Immunodeficiency Virus (HIV) Infections
- I.C.1.bInfectious agents as the cause of diseases classified to other chapters
- I.C.1.cInfections resistant to antibiotics
- I.C.1.dSepsis, Severe Sepsis, and Septic Shock Infections resistant to antibiotics
- I.C.1.eMethicillin Resistant Staphylococcus aureus (MRSA) Conditions
- I.C.1.fZika virus infections
- I.C.1.gCoronavirus infections