ICD-10 Chapter I: Certain infectious and parasitic diseases

A00-A79 - Bacterial infections, and other intestinal infectious diseases, and STDs

(A00-A09) Intestinal infectious diseases

• Cholera
• Typhoid and paratyphoid fevers
• Typhoid fever
• Infection due to Salmonella typhi
• Paratyphoid fever A
• Paratyphoid fever B
• Paratyphoid fever C
• Paratyphoid fever, unspecified

• Other Salmonella infections
• Shigellosis
• Other bacterial intestinal infections
• Enteropathogenic Escherichia coli infection
• Campylobacter enteritis
• Enteritis due to Yersinia enterocolitica
• Enterocolitis due to Clostridium difficile

• Other bacterial foodborne intoxications
• Foodborne staphylococcal intoxication
• Botulism
• Foodborne Clostridium perfringens (Clostridium welchii) intoxication

• Amoebiasis
• Other protozoal intestinal disease
• Balantidiasis
• Giardiasis (lambliasis)
• Cryptosporidiosis
• Isosporiasis
• Other specified protozoal intestinal diseases
• Intestinal trichomoniasis
• Sarcocystosis
• Sarcosporidiosis
• Protozoal intestinal disease, unspecified

• Viral and other specified intestinal infections
• Rotaviral enteritis

• Diarrhoea and gastroenteritis of presumed infectious origin

(A15-A19) Tuberculosis

• Respiratory tuberculosis, bacteriologically and histologically confirmed
• Respiratory tuberculosis, not confirmed bacteriologically or histologically
• Tuberculosis of nervous system
• Tuberculous meningitis
• Meningeal tuberculoma
• Other tuberculosis of nervous system
• Tuberculosis of nervous system, unspecified

• Tuberculosis of other organs
• Tuberculosis of bones and joints
• Tuberculosis of genitourinary system
• Tuberculous peripheral lymphadenopathy
• Tuberculosis of intestines, peritoneum and mesenteric glands
• Tuberculosis of skin and subcutaneous tissue
• Scrofuloderma
• Tuberculosis of eye
• Tuberculosis of ear
• Tuberculosis of adrenal glands
• Tuberculosis of other specified organs

• Miliary tuberculosis

(A20-A28) Certain zoonotic bacterial diseases

• Plague
• Bubonic plague
• Cellulocutaneous plague
• Pneumonic plague
• Plague meningitis
• Septicaemic plague
• Other forms of plague
• Plague, unspecified

• Tularaemia
• Anthrax
• Brucellosis
• Glanders and melioidosis
• Glanders
• acute and fulminating melioidosis
• Subacute and chronic melioidosis
• Other melioidosis
• Melioidosis, unspecified
• Whitmore's disease

• Rat-bite fevers
• Spirillosis
• Sodoku
• Streptobacillosis
• Rat-bite fever, unspecified

• Erysipeloid
• Leptospirosis
• Other zoonotic bacterial diseases, not elsewhere classified
• Pasteurellosis
• Cat-scratch disease

(A30-A49) Other bacterial diseases

• Leprosy (Hansen's disease)
• Infection due to other mycobacteria
• Pulmonary mycobacterial infection
• Infection due to Mycobacterium avium
• Infection due to Mycobacterium intracellulare (Battey bacillus)
• Infection due to Mycobacterium kansasii
• Cutaneous mycobacterial infection
• Buruli ulcer
• Infection due to Mycobacterium marinum
• Infection due to Mycobacterium ulcerans
• Other mycobacterial infections
• Mycobacterial infection, unspecified
• Atypical mycobacterium infection NOS
• Mycobacteriosis NOS

• Listeriosis
• Tetanus neonatorum
• Obstetrical tetanus
• Other tetanus
• Diphtheria
• Whooping cough
• Scarlet fever
• Meningococcal infection
• Meningococcal meningitis
• Waterhouse-Friderichsen syndrome
• Acute meningococcaemia
• Chronic meningococcaemia
• Meningococcaemia, unspecified
• Meningococcal heart disease

• Streptococcal septicaemia
• Other septicaemia
• Actinomycosis
• Nocardiosis
• Bartonellosis
• Systemic bartonellosis
• Cutaneous and mucocutaneous bartonellosis
• Other forms of bartonellosis
• Bartonellosis, unspecified

• Erysipelas
• Other bacterial diseases, not elsewhere classified
• Gas gangrene
• Legionnaires' disease
• Nonpneumonic Legionnaires' disease
• Toxic shock syndrome
• Brazilian purpuric fever
• Other specified bacterial diseases

• Bacterial infection of unspecified site
• Staphylococcal infection, unspecified
• Streptococcal infection, unspecified
• Haemophilus influenzae infection, unspecified
• Mycoplasma infection, unspecified
• Other bacterial infections of unspecified site
• Bacterial infection, unspecified
• Bacteraemia NOS

(A50-A64) Infections with a predominantly sexual mode of transmission

• Congenital syphilis
• Early congenital syphilis, symptomatic
• Early congenital syphilis, latent
• Early congenital syphilis, unspecified
• Late congenital syphilitic oculopathy
• Late congenital neurosyphilis (juvenile neurosyphilis)
• Other late congenital syphilis, symptomatic
• Late congenital syphilis, latent
• Late congenital syphilis, unspecified
• Congenital syphilis, unspecified

• Early syphilis
• Primary genital syphilis
• Syphilitic chancre NOS
• Primary anal syphilis
• Primary syphilis of other sites
• Secondary syphilis of skin and mucous membranes
• Condyloma latum
• Other secondary syphilis
• Early syphilis, latent
• Early syphilis, unspecified

• Late syphilis
• Cardiovascular syphilis
• Symptomatic neurosyphilis
• Tabes dorsalis
• Asymptomatic neurosyphilis
• Neurosyphilis, unspecified
• Gumma (syphilitic) of central nervous system NOS
• Syphilis (late) of central nervous system NOS
• Syphiloma of central nervous system NOS
• Other symptomatic late syphilis
• Gumma (syphilitic) any sites, except those classified to A52.0-A52.3
• Late or tertiary syphilis any sites, except those classified to A52.0-A52.3
• Late syphilis, latent
• Late syphilis, unspecified

• Other and unspecified syphilis
• Latent syphilis, unspecified as early or late
• Syphilis, unspecified

• Gonococcal infection
• Gonococcal infection of lower genitourinary tract without periurethral or accessory gland abscess
• Gonococcal infection of lower genitourinary tract with periurethral and accessory gland abscess
• Gonococcal pelviperitonitis and other gonococcal genitourinary infections
• Gonococcal infection of eye
• Gonococcal infection of musculoskeletal system
• Gonococcal pharyngitis
• Gonococcal infection of anus and rectum
• Other gonococcal infections
• Gonococcal infection, unspecified

• Chlamydial lymphogranuloma (venereum)
• Other sexually transmitted chlamydial diseases
• Chlamydial infection of lower genitourinary tract
• Chlamydial infection of pelviperitoneum and other genitourinary organs
• Chlamydial infection of genitourinary tract, unspecified
• Chlamydial infection of anus and rectum
• Chlamydial infection of pharynx
• Sexually transmitted chlamydial infection of other sites

• Chancroid
• Granuloma inguinale
• Trichomoniasis
• Urogenital trichomoniasis
• Trichomoniasis of other sites
• Trichomoniasis, unspecified

• Anogenital herpesviral (herpes simplex) infection
• Herpesviral infection of genitalia and urogenital tract
• Herpesviral infection of perianal skin and rectum
• Anogenital herpesviral infection, unspecified

• Other predominantly sexually transmitted diseases, not elsewhere classified
• Anogenital (venereal) warts
• Other specified predominantly sexually transmitted diseases

• Unspecified sexually transmitted disease

(A65-A69) Other spirochaetal diseases

• Nonvenereal syphilis
• Bejel
• Endemic syphilis
• Njovera
• Yaws
• Pinta (carate)
• Relapsing fevers
• Other spirochaetal infections
• Necrotizing ulcerative stomatitis
• Cancrum oris
• Fusospirochaetal gangrene
• Noma
• Stomatitis gangrenosa
• Other Vincent's infections
• Trench mouth
• Lyme disease
• Erythema chronicum migrans due to Borrelia burgdorferi
• Other specified spirochaetal infections
• Spirochaetal infection, unspecified

(A70-A74) Other diseases caused by chlamydiae

• Chlamydia psittaci infection
• Psittacosis
• Trachoma
• Other diseases caused by chlamydiae

(A75-A79) Rickettsioses

• Typhus fever
• Epidemic louse-borne typhus fever due to Rickettsia prowazekii
• Recrudescent typhus (Brill's disease)
• Typhus fever due to Rickettsia typhi
• Typhus fever due to Rickettsia tsutsugamushi
• Scrub typhus
• Typhus fever, unspecified

• Spotted fever (tick-borne rickettsioses)
• Spotted fever due to Rickettsia rickettsii
• Rocky Mountain spotted fever
• Spotted fever due to Rickettsia conorii
• Boutonneuse fever
• Q fever
• Other rickettsioses
• Trench fever
• Quintan fever
• Wolhynian fever
• Rickettsialpox due to Rickettsia akari
• Kew Garden fever
• Vesicular rickettsiosis
• Other specified rickettsioses
• Rickettsiosis due to Ehrlichia sennetsu
• Rickettsiosis, unspecified
• Rickettsial infection NOS

A80-B34 - Viral infections

(A80-A89) Viral infections of the central nervous system

• Acute poliomyelitis
• Atypical virus infections of central nervous system
• Creutzfeldt-Jakob disease
• Subacute sclerosing panencephalitis
• Progressive multifocal leukoencephalopathy
• Other atypical virus infections of central nervous system
• Kuru
• Atypical virus infection of central nervous system, unspecified
• Prion disease of central nervous system NOS
• Rabies
• Mosquito-borne viral encephalitis
• Tick-borne viral encephalitis
• Other viral encephalitis, not elsewhere classified
• Other specified viral encephalitis
• Encephalitis lethargica
• Unspecified viral encephalitis
• Viral meningitis
• Lymphocytic choriomeningitis
• Other viral infections of central nervous system, not elsewhere classified
• Epidemic vertigo
• Unspecified viral infection of central nervous system

(A90-A99) Arthropod-borne viral fevers and viral haemorrhagic fevers

• Dengue fever (classical dengue)
• Dengue haemorrhagic fever
• Other mosquito-borne viral fevers
• Chikungunya virus disease
• O'nyong-nyong fever
• Venezuelan equine fever
• West Nile virus infection
• Rift Valley fever
• Other specified mosquito-borne viral fevers
• Mosquito-borne viral fever, unspecified

• Other arthropod-borne viral fevers, not elsewhere classified
• Unspecified arthropod-borne viral fever
• Yellow fever
• Arenaviral haemorrhagic fever
• Argentine hemorrhagic fever (Junín virus)
• Machupo haemorrhagic fever
• Bolivian hemorrhagic fever
• Lassa fever
• Other viral haemorrhagic fevers, not elsewhere classified
• Crimean-Congo haemorrhagic fever
• Omsk haemorrhagic fever
• Kyasanur Forest disease
• Marburg virus disease
• Ebola virus disease
• Haemorrhagic fever with renal syndrome
• Unspecified viral haemorrhagic fever

(B00-B09) Viral infections characterized by skin and mucous membrane lesions

• Herpesviral (herpes simplex) infections
• Eczema herpeticum
• Herpesviral vesicular dermatitis
• Herpesviral gingivostomatitis and pharyngotonsillitis
• Herpesviral meningitis
• Herpesviral encephalitis
• Herpesviral ocular disease
• Disseminated herpesviral disease
• Other forms of herpesviral infection
• Herpesviral infection, unspecified
• Varicella (chickenpox)
• Varicella meningitis
• Varicella encephalitis
• Varicella pneumonia
• Varicella with other complications
• Varicella without complication
• Zoster (herpes zoster)
• Zoster encephalitis
• Zoster meningitis
• Zoster with other nervous system involvement
• Zoster ocular disease
• Disseminated zoster
• Zoster with other complications
• Zoster without complication
• Smallpox
• Monkeypox
• Measles
• Rubella (German measles)
• Viral warts
• Verruca
• Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified
• Other orthopoxvirus infections
• Cowpox
• Vaccinia
• Molluscum contagiosum
• Exanthema subitum (sixth disease)
• Erythema infectiosum (fifth disease)
• Enteroviral vesicular stomatitis with exanthem
• Hand, foot and mouth disease
• Enteroviral vesicular pharyngitis
• Other specified viral infections characterized by skin and mucous membrane lesions
• Foot-and-mouth disease
• Unspecified viral infection characterized by skin and mucous membrane lesions

(B15-B19) Viral hepatitis

• Acute hepatitis A
• Acute hepatitis B
• Other acute viral hepatitis
• Acute hepatitis C
• Acute hepatitis E
• Chronic viral hepatitis
• Unspecified viral hepatitis

(B20-B24) Human immunodeficiency virus (HIV) disease

• Human Immunodeficiency Virus (HIV) disease Resulting in infectious and parasitic diseases
• HIV disease resulting in mycobacterial infection
• HIV disease resulting in other bacterial infections
• HIV disease resulting in cytomegaloviral disease
• HIV disease resulting in other viral infections
• HIV disease resulting in candidiasis
• HIV disease resulting in other mycoses
• HIV disease resulting in Pneumocystis pneumonia
• HIV disease resulting in multiple infections
• HIV disease resulting in other infectious and parasitic diseases
• HIV disease resulting in unspecified infectious or parasitic disease

• Human Immunodeficiency Virus (HIV) disease Resulting in malignant neoplasms
• HIV disease resulting in Kaposi's sarcoma
• HIV disease resulting in Burkitt's lymphoma
• HIV disease resulting in other types of non-Hodgkin's lymphoma
• HIV disease resulting in other malignant neoplasms of lymphoid, haematopoietic and related tissue
• HIV disease resulting in multiple malignant neoplasms
• HIV disease resulting in other malignant neoplasms
• HIV disease resulting in unspecified malignant neoplasm

• Human Immunodeficiency Virus (HIV) disease Resulting in other specified diseases
• HIV disease resulting in encephalopathy
• HIV disease resulting in lymphoid interstitial pneumonitis
• HIV disease resulting in wasting syndrome
• HIV disease resulting in multiple diseases classified elsewhere

• Human Immunodeficiency Virus (HIV) disease Resulting in other conditions
• Acute HIV infection syndrome
• HIV disease resulting in (persistent) generalized lymphadenopathy
• HIV disease resulting in haematological and immunological abnormalities, not elsewhere classified]]
• HIV disease resulting in other specified conditions]]

• Unspecified Human Immunodeficiency Virus (HIV) Disease

(B25-B34) Other viral diseases

• Cytomegaloviral disease
• Mumps
• Infectious mononucleosis
• Viral conjunctivitis
• Other viral diseases, not elsewhere classified
• Epidemic myalgia
• Bornholm disease
• Ross River disease
• Epidemic polyarthritis and exanthema
• Ross River fever
• Viral carditis
• Retrovirus infections, not elsewhere classified
• Hantavirus (cardio-)pulmonary syndrome (HPS) (HCPS)
• Other specified viral diseases

• Viral infection of unspecified site

B35-B89 - Infections caused by fungi, protozoans, worms, and infestations

(B35-B49) Mycoses

• Dermatophytosis
• Tinea barbae and tinea capitis
• Beard ringworm
• Kerion
• Scalp ringworm
• Sycosis, mycotic
• Tinea unguium
• Dermatophytic onychia
• Dermatophytosis of nail
• Onychomycosis
• Ringworm of nails
• Tinea manuum
• Tinea pedis
• Tinea corporis
• Tinea imbricata
• Tinea cruris

• Other superficial mycoses
• Pityriasis versicolor
• Tinea nigra
• White piedra
• Black piedra
• Other specified superficial mycoses
• Superficial mycosis, unspecified

• Candidiasis
• Candidal stomatitis
• Oral thrush
• Pulmonary candidiasis
• Candidiasis of skin and nail
• Candidiasis of vulva and vagina
• Candidiasis of other urogenital sites
• Candidal meningitis
• Candidal endocarditis
• Candidal septicaemia
• Candidiasis of other sites
• Candidiasis, unspecified

• Dimorphic Fungi
• Coccidioidomycosis
• Histoplasmosis
• Blastomycosis
• Paracoccidioidomycosis
• Sporotrichosis
• Chromomycosis and phaeomycotic abscess
• Aspergillosis
• Cryptococcosis
• Zygomycosis
• Pulmonary mucormycosis
• Rhinocerebral mucormycosis
• Gastrointestinal mucormycosis
• Cutaneous mucormycosis
• Disseminated mucormycosis
• Mucormycosis, unspecified
• Other zygomycoses
• Zygomycosis, unspecified

• Mycetoma
• Eumycetoma
• Madura foot, mycotic
• Maduromycosis
• Actinomycetoma
• Mycetoma, unspecified
• Madura foot NOS

• Other mycoses, not elsewhere classified
• Lobomycosis
• Keloidal blastomycosis
• Lobo's disease
• Rhinosporidiosis
• Allescheriasis
• Infection due to Pseudallescheria boydii
• Geotrichosis
• Geotrichum stomatitis
• Penicillosis
• Opportunistic mycoses
• Other specified mycoses
• Adiaspiromycosis

• Unspecified mycosis

(B50-B64) Protozoal diseases

• Plasmodium falciparum malaria
• Plasmodium vivax malaria
• Plasmodium malariae malaria
• Other parasitologically confirmed malaria
• Unspecified malaria
• Leishmaniasis
• Visceral leishmaniasis
• Cutaneous leishmaniasis
• Mucocutaneous leishmaniasis
• Leishmaniasis, unspecified

• African trypanosomiasis
• Chagas' disease
• Toxoplasmosis
• Pneumocystosis
• Other protozoal diseases, not elsewhere classified
• Babesiosis
• Piroplasmosis
• Acanthamoebiasis
• Naegleriasis
• Primary amoebic meningoencephalitis
• Other specified protozoal diseases
• Microsporidiosis

• Unspecified protozoal disease

(B65-B83) Helminthiases

• Schistosomiasis (bilharziasis)
• Schistosomiasis due to Schistosoma haematobium (urinary schistosomiasis)
• Schistosomiasis due to Schistosoma mansoni (intestinal schistosomiasis)
• Schistosomiasis due to Schistosoma japonicum
• Cercarial dermatitis
• Other schistosomiases
• Schistosomiasis, unspecified

• Other fluke infections
• Opisthorchiasis
• Clonorchiasis
• Dicrocoeliasis
• Fascioliasis
• Paragonimiasis
• Fasciolopsiasis
• Other specified fluke infections

• Echinococcosis
• Taeniasis
• Taenia solium taeniasis
• Pork tapeworm
• Taenia saginata taeniasis
• Beef tapeworm
• Cysticercosis
• Diphyllobothriasis and sparganosis
• Diphyllobothriasis
• Sparganosis
• Other cestode infections
• Hymenolepiasis
• Dwarf tapeworm
• Dracunculiasis
• Onchocerciasis
• Filariasis
• Filariasis due to Wuchereria bancrofti
• Elephantiasis, filarial (ILDS B74.01)
• Filariasis due to Brugia malayi
• Filariasis due to Brugia timori
• Loiasis
• Mansonelliasis
• Other filariases
• Filariasis, unspecified

• Trichinellosis
• Hookworm diseases
• Ancylostomiasis
• Necatoriasis
• Other hookworm diseases
• Hookworm disease, unspecified
• Cutaneous larva migrans NOS

• Ascariasis
• Strongyloidiasis
• Trichuriasis
• Enterobiasis
• Other intestinal helminthiases, not elsewhere classified
• Unspecified intestinal parasitism
• Other helminthiases
• Visceral larva migrans
• Gnathostomiasis
• Angiostrongyliasis due to Parastrongylus cantonensis
• Syngamiasis
• Internal hirudiniasis
• Other specified helminthiases
• Helminthiasis, unspecified

(B85-B89) Pediculosis, acariasis and other infestations

• Pediculosis and phthiriasis
• Pediculosis due to Pediculus humanus capitis
• Pediculosis due to Pediculus humanus corporis
• Pediculosis, unspecified
• Phthiriasis
• Mixed pediculosis and phthiriasis

• Scabies
• Myiasis
• Other infestations
• Other acariasis
• Acarine dermatitis
• Trombiculosis
• Tungiasis (sandflea infestation)
• Other arthropod infestations
• Scarabiasis
• External hirudiniasis
• Leech infestation NOS
• Other specified infestations
• Ichthyoparasitism due to Vandellia cirrhosa
• Linguatulosis
• Porocephaliasis
• Infestation, unspecified
• Infestation (skin) NOS
• Infestation by mites NOS
• Skin parasites NOS

• Unspecified parasitic disease
• Other acariasis
• Tungiasis (sandflea infestation)
• Other arthropod infestations
• External hirudiniasis
• Other specified infestations
• Infestation, unspecified

B90-B99 - Sequelae, and diseases classified elsewhere

(B90-B94) Sequelae of infectious and parasitic diseases

• Sequelae of tuberculosis
• Sequelae of poliomyelitis
• Sequelae of leprosy
• Sequelae of other and unspecified infectious and parasitic diseases
• Sequelae of trachoma
• Sequelae of viral encephalitis
• Sequelae of viral hepatitis
• Sequelae of other specified infectious and parasitic diseases
• Sequelae of unspecified infectious or parasitic disease

(B95-B97) Bacterial, viral and other infectious agents

• Streptococcus and staphylococcus as the cause of diseases classified to other chapters
• Streptococcus, group A, as the cause of diseases classified to other chapters
• Streptococcus, group B, as the cause of diseases classified to other chapters
• Streptococcus, group D, as the cause of diseases classified to other chapters
• Streptococcus pneumoniae as the cause of diseases classified to other chapters
• Other streptococcus as the cause of diseases classified to other chapters
• Unspecified streptococcus as the cause of diseases classified to other chapters
• Staphylococcus aureus as the cause of diseases classified to other chapters
• Other staphylococcus as the cause of diseases classified to other chapters
• Unspecified staphylococcus as the cause of diseases classified to other chapters
• Other bacterial agents as the cause of diseases classified to other chapters
• Mycoplasma pneumoniae (M. pneumoniae) as the cause of diseases classified to other chapters
• Klebsiella pneumoniae (K. pneumoniae) as the cause of diseases classified to other chapters
• Escherichia coli (E. coli) as the cause of diseases classified to other chapters
• Haemophilus influenzae (H. influenzae) as the cause of diseases classified to other chapters
• Proteus (mirabilis)(morganii) as the cause of diseases classified to other chapters
• Pseudomonas (aeruginosa)(mallei)(pseudomallei) as the cause of diseases classified to other chapters
• Bacillus fragilis (B. fragilis) as the cause of diseases classified to other chapters
• Clostridium perfringens (C. perfringens) as the cause of diseases classified to other chapters
• Other specified bacterial agents as the cause of diseases classified to other chapters
• Viral agents as the cause of diseases classified to other chapters
• Adenovirus as the cause of diseases classified to other chapters
• Enterovirus as the cause of diseases classified to other chapters
• Coxsackievirus
• Echovirus
• Coronavirus as the cause of diseases classified to other chapters
• Retrovirus as the cause of diseases classified to other chapters
• Lentivirus
• Oncovirus
• Respiratory syncytial virus as the cause of diseases classified to other chapters
• Reovirus as the cause of diseases classified to other chapters
• Parvovirus as the cause of diseases classified to other chapters
• Papillomavirus as the cause of diseases classified to other chapters
• Other viral agents as the cause of diseases classified to other chapters

(B99) Other infectious diseases

• Other and unspecified infectious diseases

See also

• List of ICD-10 codes
• International Statistical Classification of Diseases and Related Health Problems