| A000 | Cholera due to Vibrio cholerae 01, biovar cholerae |
| A001 | Cholera due to Vibrio cholerae 01, biovar eltor |
| A009 | Cholera, unspecified |
| A0100 | Typhoid fever, unspecified |
| A0101 | Typhoid meningitis |
| A0102 | Typhoid fever with heart involvement |
| A0103 | Typhoid pneumonia |
| A0104 | Typhoid arthritis |
| A0105 | Typhoid osteomyelitis |
| A0109 | Typhoid fever with other complications |
| A011 | Paratyphoid fever A |
| A012 | Paratyphoid fever B |
| A013 | Paratyphoid fever C |
| A014 | Paratyphoid fever, unspecified |
| A020 | Salmonella enteritis |
| A0223 | Salmonella arthritis |
| A0224 | Salmonella osteomyelitis |
| A0225 | Salmonella pyelonephritis |
| A0229 | Salmonella with other localized infection |
| A028 | Other specified salmonella infections |
| A029 | Salmonella infection, unspecified |
| A030 | Shigellosis due to Shigella dysenteriae |
| 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 |
| A0471 | Enterocolitis due to Clostridium difficile, recurrent |
| A0472 | Enterocolitis due to Clostridium difficile, not specified as recurrent |
| A048 | Other specified bacterial intestinal infections |
| A049 | Bacterial intestinal infection, unspecified |
| A050 | Foodborne staphylococcal intoxication |
| A051 | Botulism food poisoning |
| 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 |
| A063 | Ameboma of intestine |
| A0681 | Amebic cystitis |
| A0682 | Other amebic genitourinary infections |
| A0689 | Other amebic infections |
| A071 | Giardiasis [lambliasis] |
| A072 | Cryptosporidiosis |
| A073 | Isosporiasis |
| A074 | Cyclosporiasis |
| A078 | Other specified protozoal intestinal diseases |
| A079 | Protozoal intestinal disease, unspecified |
| A080 | Rotaviral enteritis |
| A0811 | Acute gastroenteropathy due to Norwalk agent |
| A0819 | Acute gastroenteropathy due to other small round viruses |
| A082 | Adenoviral enteritis |
| A0831 | Calicivirus enteritis |
| A0832 | Astrovirus enteritis |
| A0839 | Other viral enteritis |
| A09 | Infectious gastroenteritis and colitis, unspecified |
| A150 | Tuberculosis of lung |
| A154 | Tuberculosis of intrathoracic lymph nodes |
| A155 | Tuberculosis of larynx, trachea and bronchus |
| A156 | Tuberculous pleurisy |
| A157 | Primary respiratory tuberculosis |
| A158 | Other respiratory tuberculosis |
| A159 | Respiratory tuberculosis unspecified |
| A179 | Tuberculosis of nervous system, unspecified |
| A1801 | Tuberculosis of spine |
| A1802 | Tuberculous arthritis of other joints |
| A1803 | Tuberculosis of other bones |
| A1809 | Other musculoskeletal tuberculosis |
| A1810 | Tuberculosis of genitourinary system, unspecified |
| A1811 | Tuberculosis of kidney and ureter |
| A1812 | Tuberculosis of bladder |
| A1813 | Tuberculosis of other urinary organs |
| A1814 | Tuberculosis of prostate |
| A1815 | Tuberculosis of other male genital organs |
| A1816 | Tuberculosis of cervix |
| A1817 | Tuberculous female pelvic inflammatory disease |
| A1818 | Tuberculosis of other female genital organs |
| A182 | Tuberculous peripheral lymphadenopathy |
| A1832 | Tuberculous enteritis |
| A1839 | Retroperitoneal tuberculosis |
| A184 | Tuberculosis of skin and subcutaneous tissue |
| A1850 | Tuberculosis of eye, unspecified |
| A1851 | Tuberculous episcleritis |
| A1852 | Tuberculous keratitis |
| A1853 | Tuberculous chorioretinitis |
| A1854 | Tuberculous iridocyclitis |
| A1859 | Other tuberculosis of eye |
| A186 | Tuberculosis of (inner) (middle) ear |
| A187 | Tuberculosis of adrenal glands |
| A1881 | Tuberculosis of thyroid gland |
| A1882 | Tuberculosis of other endocrine glands |
| A1883 | Tuberculosis of digestive tract organs, not elsewhere classified |
| A1884 | Tuberculosis of heart |
| A1885 | Tuberculosis of spleen |
| A1889 | Tuberculosis of other sites |
| A210 | Ulceroglandular tularemia |
| A211 | Oculoglandular tularemia |
| A212 | Pulmonary tularemia |
| A213 | Gastrointestinal tularemia |
| A217 | Generalized tularemia |
| A218 | Other forms of tularemia |
| A219 | Tularemia, unspecified |
| A220 | Cutaneous anthrax |
| A222 | Gastrointestinal anthrax |
| A228 | Other forms of anthrax |
| A229 | Anthrax, unspecified |
| A238 | Other brucellosis |
| A239 | Brucellosis, unspecified |
| A240 | Glanders |
| A241 | Acute and fulminating melioidosis |
| A242 | Subacute and chronic melioidosis |
| A243 | Other melioidosis |
| A249 | Melioidosis, unspecified |
| A250 | Spirillosis |
| A251 | Streptobacillosis |
| A259 | Rat-bite fever, unspecified |
| A270 | Leptospirosis icterohemorrhagica |
| A2789 | Other forms of leptospirosis |
| A279 | Leptospirosis, unspecified |
| A280 | Pasteurellosis |
| A281 | Cat-scratch disease |
| A282 | Extraintestinal yersiniosis |
| A288 | Other specified zoonotic bacterial diseases, not elsewhere classified |
| A289 | Zoonotic bacterial disease, unspecified |
| A300 | Indeterminate leprosy |
| A301 | Tuberculoid leprosy |
| A302 | Borderline tuberculoid leprosy |
| A303 | Borderline leprosy |
| A304 | Borderline lepromatous leprosy |
| A305 | Lepromatous leprosy |
| A308 | Other forms of leprosy |
| A309 | Leprosy, unspecified |
| A310 | Pulmonary mycobacterial infection |
| A311 | Cutaneous mycobacterial infection |
| A312 | Disseminated mycobacterium avium-intracellulare complex (DMAC) |
| A318 | Other mycobacterial infections |
| A319 | Mycobacterial infection, unspecified |
| A320 | Cutaneous listeriosis |
| A3211 | Listerial meningitis |
| A3212 | Listerial meningoencephalitis |
| A3281 | Oculoglandular listeriosis |
| A3282 | Listerial endocarditis |
| A3289 | Other forms of listeriosis |
| A329 | Listeriosis, unspecified |
| A34 | Obstetrical tetanus |
| A360 | Pharyngeal diphtheria |
| A361 | Nasopharyngeal diphtheria |
| A362 | Laryngeal diphtheria |
| A363 | Cutaneous diphtheria |
| A3681 | Diphtheritic cardiomyopathy |
| A3682 | Diphtheritic radiculomyelitis |
| A3683 | Diphtheritic polyneuritis |
| A3684 | Diphtheritic tubulo-interstitial nephropathy |
| A3685 | Diphtheritic cystitis |
| A3686 | Diphtheritic conjunctivitis |
| A3689 | Other diphtheritic complications |
| A369 | Diphtheria, unspecified |
| A3700 | Whooping cough due to Bordetella pertussis without pneumonia |
| A3710 | Whooping cough due to Bordetella parapertussis without pneumonia |
| A3780 | Whooping cough due to other Bordetella species without pneumonia |
| A3790 | Whooping cough, unspecified species without pneumonia |
| A380 | Scarlet fever with otitis media |
| A381 | Scarlet fever with myocarditis |
| A388 | Scarlet fever with other complications |
| A389 | Scarlet fever, uncomplicated |
| A3982 | Meningococcal retrobulbar neuritis |
| A3983 | Meningococcal arthritis |
| A3984 | Postmeningococcal arthritis |
| A3989 | Other meningococcal infections |
| A399 | Meningococcal infection, unspecified |
| A420 | Pulmonary actinomycosis |
| A421 | Abdominal actinomycosis |
| A422 | Cervicofacial actinomycosis |
| A4281 | Actinomycotic meningitis |
| A4282 | Actinomycotic encephalitis |
| A4289 | Other forms of actinomycosis |
| A429 | Actinomycosis, unspecified |
| A430 | Pulmonary nocardiosis |
| A431 | Cutaneous nocardiosis |
| A438 | Other forms of nocardiosis |
| A439 | Nocardiosis, unspecified |
| A440 | Systemic bartonellosis |
| A441 | Cutaneous and mucocutaneous bartonellosis |
| A448 | Other forms of bartonellosis |
| A449 | Bartonellosis, unspecified |
| A4851 | Infant botulism |
| A4852 | Wound botulism |
| A5001 | Early congenital syphilitic oculopathy |
| A5002 | Early congenital syphilitic osteochondropathy |
| A5003 | Early congenital syphilitic pharyngitis |
| A5004 | Early congenital syphilitic pneumonia |
| A5005 | Early congenital syphilitic rhinitis |
| A5006 | Early cutaneous congenital syphilis |
| A5007 | Early mucocutaneous congenital syphilis |
| A5008 | Early visceral congenital syphilis |
| A5009 | Other early congenital syphilis, symptomatic |
| A502 | Early congenital syphilis, unspecified |
| A5030 | Late congenital syphilitic oculopathy, unspecified |
| A5031 | Late congenital syphilitic interstitial keratitis |
| A5032 | Late congenital syphilitic chorioretinitis |
| A5039 | Other late congenital syphilitic oculopathy |
| A5040 | Late congenital neurosyphilis, unspecified |
| A5043 | Late congenital syphilitic polyneuropathy |
| A5044 | Late congenital syphilitic optic nerve atrophy |
| A5045 | Juvenile general paresis |
| A5049 | Other late congenital neurosyphilis |
| A5051 | Clutton's joints |
| A5052 | Hutchinson's teeth |
| A5053 | Hutchinson's triad |
| A5054 | Late congenital cardiovascular syphilis |
| A5055 | Late congenital syphilitic arthropathy |
| A5056 | Late congenital syphilitic osteochondropathy |
| A5057 | Syphilitic saddle nose |
| A5059 | Other late congenital syphilis, symptomatic |
| A5131 | Condyloma latum |
| A5132 | Syphilitic alopecia |
| A5139 | Other secondary syphilis of skin |
| A5142 | Secondary syphilitic female pelvic disease |
| A5143 | Secondary syphilitic oculopathy |
| A5144 | Secondary syphilitic nephritis |
| A5145 | Secondary syphilitic hepatitis |
| A5146 | Secondary syphilitic osteopathy |
| A5149 | Other secondary syphilitic conditions |
| A5200 | Cardiovascular syphilis, unspecified |
| A5201 | Syphilitic aneurysm of aorta |
| A5202 | Syphilitic aortitis |
| A5203 | Syphilitic endocarditis |
| A5204 | Syphilitic cerebral arteritis |
| A5205 | Other cerebrovascular syphilis |
| A5206 | Other syphilitic heart involvement |
| A5209 | Other cardiovascular syphilis |
| A5210 | Symptomatic neurosyphilis, unspecified |
| A5211 | Tabes dorsalis |
| A5212 | Other cerebrospinal syphilis |
| A5215 | Late syphilitic neuropathy |
| A5216 | Charcot's arthropathy (tabetic) |
| A5217 | General paresis |
| A5219 | Other symptomatic neurosyphilis |
| A522 | Asymptomatic neurosyphilis |
| A523 | Neurosyphilis, unspecified |
| A5271 | Late syphilitic oculopathy |
| A5272 | Syphilis of lung and bronchus |
| A5273 | Symptomatic late syphilis of other respiratory organs |
| A5274 | Syphilis of liver and other viscera |
| A5275 | Syphilis of kidney and ureter |
| A5276 | Other genitourinary symptomatic late syphilis |
| A5277 | Syphilis of bone and joint |
| A5278 | Syphilis of other musculoskeletal tissue |
| A5279 | Other symptomatic late syphilis |
| A5400 | Gonococcal infection of lower genitourinary tract, unspecified |
| A5401 | Gonococcal cystitis and urethritis, unspecified |
| A5402 | Gonococcal vulvovaginitis, unspecified |
| A5403 | Gonococcal cervicitis, unspecified |
| A5409 | Other gonococcal infection of lower genitourinary tract |
| A541 | Gonococcal infection of lower genitourinary tract with periurethral and accessory gland abscess |
| A5421 | Gonococcal infection of kidney and ureter |
| A5422 | Gonococcal prostatitis |
| A5423 | Gonococcal infection of other male genital organs |
| A5424 | Gonococcal female pelvic inflammatory disease |
| A5429 | Other gonococcal genitourinary infections |
| A5430 | Gonococcal infection of eye, unspecified |
| A5431 | Gonococcal conjunctivitis |
| A5432 | Gonococcal iridocyclitis |
| A5433 | Gonococcal keratitis |
| A5439 | Other gonococcal eye infection |
| A5440 | Gonococcal infection of musculoskeletal system, unspecified |
| A5441 | Gonococcal spondylopathy |
| A5442 | Gonococcal arthritis |
| A5443 | Gonococcal osteomyelitis |
| A5449 | Gonococcal infection of other musculoskeletal tissue |
| A5482 | Gonococcal brain abscess |
| A5483 | Gonococcal heart infection |
| A5484 | Gonococcal pneumonia |
| A5485 | Gonococcal peritonitis |
| A5489 | Other gonococcal infections |
| A549 | Gonococcal infection, unspecified |
| A680 | Louse-borne relapsing fever |
| A681 | Tick-borne relapsing fever |
| A689 | Relapsing fever, unspecified |
| A691 | Other Vincent's infections |
| A6920 | Lyme disease, unspecified |
| A6921 | Meningitis due to Lyme disease |
| A6922 | Other neurologic disorders in Lyme disease |
| A6923 | Arthritis due to Lyme disease |
| A6929 | Other conditions associated with Lyme disease |
| A70 | Chlamydia psittaci infections |
| A750 | Epidemic louse-borne typhus fever due to Rickettsia prowazekii |
| A751 | Recrudescent typhus [Brill's disease] |
| A752 | Typhus fever due to Rickettsia typhi |
| A753 | Typhus fever due to Rickettsia tsutsugamushi |
| A759 | Typhus fever, unspecified |
| A770 | Spotted fever due to Rickettsia rickettsii |
| A771 | Spotted fever due to Rickettsia conorii |
| A772 | Spotted fever due to Rickettsia siberica |
| A773 | Spotted fever due to Rickettsia australis |
| A7740 | Ehrlichiosis, unspecified |
| A7741 | Ehrlichiosis chafeensis [E. chafeensis] |
| A7749 | Other ehrlichiosis |
| A778 | Other spotted fevers |
| A779 | Spotted fever, unspecified |
| A78 | Q fever |
| A790 | Trench fever |
| A791 | Rickettsialpox due to Rickettsia akari |
| A7981 | Rickettsiosis due to Ehrlichia sennetsu |
| A7982 | Anaplasmosis [A. phagocytophilum] |
| A7989 | Other specified rickettsioses |
| A799 | Rickettsiosis, unspecified |
| A8100 | Creutzfeldt-Jakob disease, unspecified |
| A8101 | Variant Creutzfeldt-Jakob disease |
| A8109 | Other Creutzfeldt-Jakob disease |
| A811 | Subacute sclerosing panencephalitis |
| A812 | Progressive multifocal leukoencephalopathy |
| A8181 | Kuru |
| A8182 | Gerstmann-Straussler-Scheinker syndrome |
| A8183 | Fatal familial insomnia |
| A8189 | Other atypical virus infections of central nervous system |
| A819 | Atypical virus infection of central nervous system, unspecified |
| A820 | Sylvatic rabies |
| A821 | Urban rabies |
| A829 | Rabies, unspecified |
| A850 | Enteroviral encephalitis |
| A851 | Adenoviral encephalitis |
| A858 | Other specified viral encephalitis |
| A86 | Unspecified viral encephalitis |
| A870 | Enteroviral meningitis |
| A871 | Adenoviral meningitis |
| A872 | Lymphocytic choriomeningitis |
| A878 | Other viral meningitis |
| A879 | Viral meningitis, unspecified |
| A880 | Enteroviral exanthematous fever [Boston exanthem] |
| A888 | Other specified viral infections of central nervous system |
| A89 | Unspecified viral infection of central nervous system |
| A90 | Dengue fever [classical dengue] |
| A91 | Dengue hemorrhagic fever |
| A920 | Chikungunya virus disease |
| A921 | O'nyong-nyong fever |
| A922 | Venezuelan equine fever |
| A924 | Rift Valley fever |
| A925 | Zika virus disease |
| A928 | Other specified mosquito-borne viral fevers |
| A929 | Mosquito-borne viral fever, unspecified |
| A930 | Oropouche virus disease |
| A931 | Sandfly fever |
| A932 | Colorado tick fever |
| A938 | Other specified arthropod-borne viral fevers |
| A94 | Unspecified arthropod-borne viral fever |
| A950 | Sylvatic yellow fever |
| A951 | Urban yellow fever |
| A959 | Yellow fever, unspecified |
| A960 | Junin hemorrhagic fever |
| A961 | Machupo hemorrhagic fever |
| A968 | Other arenaviral hemorrhagic fevers |
| A969 | Arenaviral hemorrhagic fever, unspecified |
| A980 | Crimean-Congo hemorrhagic fever |
| A981 | Omsk hemorrhagic fever |
| A982 | Kyasanur Forest disease |
| A985 | Hemorrhagic fever with renal syndrome |
| A988 | Other specified viral hemorrhagic fevers |
| A99 | Unspecified viral hemorrhagic fever |
| B002 | Herpesviral gingivostomatitis and pharyngotonsillitis |
| B0050 | Herpesviral ocular disease, unspecified |
| B0051 | Herpesviral iridocyclitis |
| B0052 | Herpesviral keratitis |
| B0053 | Herpesviral conjunctivitis |
| B0059 | Other herpesviral disease of eye |
| B0081 | Herpesviral hepatitis |
| B0089 | Other herpesviral infection |
| B010 | Varicella meningitis |
| B0181 | Varicella keratitis |
| B0189 | Other varicella complications |
| B019 | Varicella without complication |
| B020 | Zoster encephalitis |
| B0221 | Postherpetic geniculate ganglionitis |
| B0222 | Postherpetic trigeminal neuralgia |
| B0223 | Postherpetic polyneuropathy |
| B0229 | Other postherpetic nervous system involvement |
| B0230 | Zoster ocular disease, unspecified |
| B0231 | Zoster conjunctivitis |
| B0232 | Zoster iridocyclitis |
| B0233 | Zoster keratitis |
| B0234 | Zoster scleritis |
| B0239 | Other herpes zoster eye disease |
| B027 | Disseminated zoster |
| B028 | Zoster with other complications |
| B03 | Smallpox |
| B04 | Monkeypox |
| B051 | Measles complicated by meningitis |
| B054 | Measles with intestinal complications |
| B0581 | Measles keratitis and keratoconjunctivitis |
| B0589 | Other measles complications |
| B0600 | Rubella with neurological complication, unspecified |
| B0602 | Rubella meningitis |
| B0609 | Other neurological complications of rubella |
| B0681 | Rubella pneumonia |
| B0682 | Rubella arthritis |
| B0689 | Other rubella complications |
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