A00-B99

Certain infectious and parasitic diseases

Chapter 1

Covers bacterial, viral, and parasitic infections including tuberculosis, HIV, hepatitis, and other communicable diseases.

Additional Information

From parent codes: A00-B99 (Chapter 1)

IncludesFrom A00-B99

Conditions included in this code from parent codes.

  • diseases generally recognized as communicable or transmissible
Excludes 1 — Not Coded HereFrom A00-B99

Excludes1 means 'NOT CODED HERE!' An Excludes1 note indicates mutually exclusive codes: two conditions that cannot be reported together.

  • certain localized infections - see body system-related chapters
Excludes 2 — Not Included HereFrom A00-B99

Excludes2 means 'NOT INCLUDED HERE!' An Excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time.

  • carrier or suspected carrier of infectious disease (Z22.-)
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)
Use Additional CodeFrom A00-B99

The 'use additional code' note instructs that a secondary code should be added to provide more detail.

  • code to identify resistance to antimicrobial drugs (Z16.-)

Codes in this Chapter (167)

A00Cholera3 codesA01Typhoid and paratyphoid fevers5 codesA02Other salmonella infections5 codesA03Shigellosis6 codesA04Other bacterial intestinal infections10 codesA05Other bacterial foodborne intoxications, not elsewhere classified8 codesA06Amebiasis10 codesA07Other protozoal intestinal diseases7 codesA08Viral and other specified intestinal infections6 codesA09Infectious gastroenteritis and colitis, unspecifiedA15Respiratory tuberculosis7 codesA17Tuberculosis of nervous system4 codesA18Tuberculosis of other organs9 codesA19Miliary tuberculosis5 codesA20Plague7 codesA21Tularemia7 codesA22Anthrax6 codesA23Brucellosis6 codesA24Glanders and melioidosis5 codesA25Rat-bite fevers3 codesA26Erysipeloid4 codesA27Leptospirosis3 codesA28Other zoonotic bacterial diseases, not elsewhere classified5 codesA30Leprosy [Hansen's disease]8 codesA31Infection due to other mycobacteria5 codesA32Listeriosis5 codesA33Tetanus neonatorumA34Obstetrical tetanusA35Other tetanusA36Diphtheria6 codesA37Whooping cough4 codesA38Scarlet fever4 codesA39Meningococcal infection8 codesA40Streptococcal sepsis5 codesA41Other sepsis8 codesA42Actinomycosis6 codesA43Nocardiosis4 codesA44Bartonellosis4 codesA46ErysipelasA48Other bacterial diseases, not elsewhere classified7 codesA49Bacterial infection of unspecified site6 codesA50Congenital syphilis9 codesA51Early syphilis7 codesA52Late syphilis7 codesA53Other and unspecified syphilis2 codesA54Gonococcal infection9 codesA55Chlamydial lymphogranuloma (venereum)A56Other sexually transmitted chlamydial diseases6 codesA57ChancroidA58Granuloma inguinaleA59Trichomoniasis3 codesA60Anogenital herpesviral [herpes simplex] infections3 codesA63Other predominantly sexually transmitted diseases, not elsewhere classified2 codesA64Unspecified sexually transmitted diseaseA65Nonvenereal syphilisA66Yaws10 codesA67Pinta [carate]5 codesA68Relapsing fevers3 codesA69Other spirochetal infections5 codesA70Chlamydia psittaci infectionsA71Trachoma3 codesA74Other diseases caused by chlamydiae3 codesA75Typhus fever5 codesA77Spotted fever [tick-borne rickettsioses]7 codesA78Q feverA79Other rickettsioses4 codesA80Acute poliomyelitis6 codesA81Atypical virus infections of central nervous system5 codesA82Rabies3 codesA83Mosquito-borne viral encephalitis9 codesA84Tick-borne viral encephalitis4 codesA85Other viral encephalitis, not elsewhere classified4 codesA86Unspecified viral encephalitisA87Viral meningitis5 codesA88Other viral infections of central nervous system, not elsewhere classified3 codesA89Unspecified viral infection of central nervous systemA90Dengue fever [classical dengue]A91Dengue hemorrhagic feverA92Other mosquito-borne viral fevers8 codesA93Other arthropod-borne viral fevers, not elsewhere classified4 codesA94Unspecified arthropod-borne viral feverA95Yellow fever3 codesA96Arenaviral hemorrhagic fever5 codesA98Other viral hemorrhagic fevers, not elsewhere classified7 codesA99Unspecified viral hemorrhagic feverB00Herpesviral [herpes simplex] infections9 codesB01Varicella [chickenpox]5 codesB02Zoster [herpes zoster]7 codesB03SmallpoxB04MonkeypoxB05Measles7 codesB06Rubella [German measles]3 codesB07Viral warts3 codesB08Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified9 codesB09Unspecified viral infection characterized by skin and mucous membrane lesionsB10Other human herpesviruses2 codesB15Acute hepatitis A2 codesB16Acute hepatitis B4 codesB17Other acute viral hepatitis5 codesB18Chronic viral hepatitis5 codesB19Unspecified viral hepatitis4 codesB20Human immunodeficiency virus [HIV] diseaseB25Cytomegaloviral disease5 codesB26Mumps6 codesB27Infectious mononucleosis4 codesB30Viral conjunctivitis6 codesB33Other viral diseases, not elsewhere classified6 codesB34Viral infection of unspecified site7 codesB35Dermatophytosis9 codesB36Other superficial mycoses6 codesB37Candidiasis10 codesB38Coccidioidomycosis8 codesB39Histoplasmosis7 codesB40Blastomycosis7 codesB41Paracoccidioidomycosis4 codesB42Sporotrichosis5 codesB43Chromomycosis and pheomycotic abscess5 codesB44Aspergillosis6 codesB45Cryptococcosis7 codesB46Zygomycosis8 codesB47Mycetoma3 codesB48Other mycoses, not elsewhere classified6 codesB49Unspecified mycosisB50Plasmodium falciparum malaria3 codesB51Plasmodium vivax malaria3 codesB52Plasmodium malariae malaria3 codesB53Other specified malaria3 codesB54Unspecified malariaB55Leishmaniasis4 codesB56African trypanosomiasis3 codesB57Chagas' disease6 codesB58Toxoplasmosis6 codesB59PneumocystosisB60Other protozoal diseases, not elsewhere classified4 codesB64Unspecified protozoal diseaseB65Schistosomiasis [bilharziasis]6 codesB66Other fluke infections8 codesB67Echinococcosis10 codesB68Taeniasis3 codesB69Cysticercosis4 codesB70Diphyllobothriasis and sparganosis2 codesB71Other cestode infections4 codesB72DracunculiasisB73Onchocerciasis2 codesB74Filariasis7 codesB75TrichinellosisB76Hookworm diseases4 codesB77Ascariasis3 codesB78Strongyloidiasis4 codesB79TrichuriasisB80EnterobiasisB81Other intestinal helminthiases, not elsewhere classified6 codesB82Unspecified intestinal parasitism2 codesB83Other helminthiases7 codesB85Pediculosis and phthiriasis5 codesB86ScabiesB87Myiasis7 codesB88Other infestations6 codesB89Unspecified parasitic diseaseB90Sequelae of tuberculosis5 codesB91Sequelae of poliomyelitisB92Sequelae of leprosyB94Sequelae of other and unspecified infectious and parasitic diseases5 codesB95Streptococcus, Staphylococcus, and Enterococcus as the cause of diseases classified elsewhere9 codesB96Other bacterial agents as the cause of diseases classified elsewhere9 codesB97Viral agents as the cause of diseases classified elsewhere9 codesB99Other and unspecified infectious diseases2 codes