ICD-10 Chapter A

International Statistical Classification of Diseases and Related Health Problems 10th Revision
Chapter Blocks Title
I A00–B99 Certain infectious and parasitic diseases
II C00–D48 Neoplasms
III D50–D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
IV E00–E90 Endocrine, nutritional and metabolic diseases
V F00–F99 Mental and behavioural disorders
VI G00–G99 Diseases of the nervous system
VII H00–H59 Diseases of the eye and adnexa
VIII H60–H95 Diseases of the ear and mastoid process
IX I00–I99 Diseases of the circulatory system
X J00–J99 Diseases of the respiratory system
XI K00–K93 Diseases of the digestive system
XII L00–L99 Diseases of the skin and subcutaneous tissue
XIII M00–M99 Diseases of the musculoskeletal system and connective tissue
XIV N00–N99 Diseases of the genitourinary system
XV O00–O99 Pregnancy, childbirth and the puerperium
XVI P00–P96 Certain conditions originating in the perinatal period
XVII Q00–Q99 Congenital malformations, deformations and chromosomal abnormalities
XVIII R00–R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
XIX S00–T98 Injury, poisoning and certain other consequences of external causes
XX V01–Y98 External causes of morbidity and mortality
XXI Z00–Z99 Factors influencing health status and contact with health services
XXII U00–U99 Codes for special purposes
The International Statistical Classification of Diseases and Related Health Problems 10th Revision (ICD-10) is a coding of diseases and signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or diseases, as classified by the World Health Organization (WHO).[1] This page contains 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
  • (paratyphoid fevers
    • (Typhoid fever
    • (Paratyphoid fever A
    • (Paratyphoid fever B
    • (Paratyphoid fever C
    • (Paratyphoid fever, unspecified
  • (Salmonella infections
  • (Shigellosis
    • (Shigella dysenteriae
    • (Shigella flexneri
    • (Shigella boydii
    • (Shigella sonnei
    • (shigellosis
    • (Shigellosis, unspecified
  • (intestinal infections
    • (Enteropathogenic Escherichia coli infection
    • (Enterotoxigenic Escherichia coli infection
    • (Enteroinvasive Escherichia coli infection
    • (Enterohaemorrhagic Escherichia coli infection
    • (Escherichia coli infections
    • (enteritis
    • (Yersinia enterocolitica
    • (Clostridium difficile
    • (04.8) Other specified bacterial intestinal infections
    • (04.9) Bacterial intestinal infection, unspecified
      • Bacterial enteritis NOS
  • (foodborne intoxications
    • (staphylococcal intoxication
    • (Botulism
    • (Clostridium welchii) intoxication
  • (Amoebiasis
    • (Acute amoebic dysentery
    • (06.1) Chronic intestinal amoebiasis
    • (06.2) Amoebic nondysenteric colitis
    • (06.3) Amoeboma of intestine
    • (Amoebic liver abscess
    • (06.5) Amoebic lung abscess
    • (Amoebic brain abscess
    • (Cutaneous amoebiasis
    • (06.8) Amoebic infection of other sites
    • (Amoebiasis, unspecified
  • (intestinal disease
  • (intestinal infections
    • (enteritis
  • (gastroenteritis of presumed infectious origin

(A15–A19) Tuberculosis

  • (Respiratory tuberculosis, bacteriologically and histologically confirmed
  • (Respiratory tuberculosis, not confirmed bacteriologically or histologically
  • (nervous system
    • (Tuberculous meningitis
    • (17.1) Meningeal tuberculoma
    • (nervous system
    • (nervous system, unspecified
  • (Tuberculosis of other organs
    • (joints
    • (genitourinary system
    • (18.2) Tuberculous peripheral lymphadenopathy
    • (mesenteric glands
    • (subcutaneous tissue
    • (eye
    • (ear
    • (adrenal glands
    • (organs
  • (Miliary tuberculosis

(A20–A28) Certain zoonotic bacterial diseases

  • (Plague
    • (Bubonic plague
    • (20.1) Cellulocutaneous plague
    • (Pneumonic plague
    • (20.3) Plague meningitis
    • (20.7) Septicaemic plague
    • (plague
    • (Plague, unspecified
  • (Tularaemia
  • (Anthrax
  • (Brucellosis
  • (melioidosis
    • (Glanders
    • (acute and fulminating melioidosis
    • (melioidosis
    • (melioidosis
    • (24.4)
  • (Rat-bite fevers
    • (Spirillosis
    • (Streptobacillosis
    • (Rat-bite fever, unspecified
  • (Erysipeloid
  • (Leptospirosis
  • (zoonotic bacterial diseases, not elsewhere classified
    • (Pasteurellosis
    • (Cat-scratch disease

(A30–A49) Other bacterial diseases

  • (Leprosy (Hansen's disease)
  • (mycobacteria
  • (Listeriosis
  • (Tetanus neonatorum
  • (Obstetrical tetanus
  • (tetanus
  • (Diphtheria
  • (Whooping cough
  • (Scarlet fever
  • (Meningococcal infection
    • (Meningococcal meningitis
    • (Waterhouse-Friderichsen syndrome
    • (meningococcaemia
    • (meningococcaemia
    • (Meningococcaemia, unspecified
    • (heart disease
  • (Streptococcal septicaemia
  • (septicaemia
    • (Staphylococcus aureus
    • (staphylococcus
    • (staphylococcus
    • (Haemophilus influenzae
    • (anaerobes
    • (Gram-negative organisms
    • (septicaemia
    • (Septicaemia, unspecified
  • (Actinomycosis
  • (Nocardiosis
  • (Bartonellosis
    • (Systemic bartonellosis
    • (bartonellosis
    • (bartonellosis
    • (Bartonellosis, unspecified
  • (Erysipelas
  • (bacterial diseases, not elsewhere classified
    • (Gas gangrene
    • (Legionnaires' disease
    • (Nonpneumonic Legionnaires' disease
    • (Toxic shock syndrome
    • (Brazilian purpuric fever
    • (bacterial diseases
  • (Bacterial infection of unspecified site
    • (Staphylococcal infection, unspecified
    • (Streptococcal infection, unspecified
    • (Haemophilus influenzae infection, unspecified
    • (Mycoplasma infection, unspecified
    • (bacterial infections of unspecified site
    • (49.9) Bacterial infection, unspecified

(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
    • (50.4) Late congenital neurosyphilis (juvenile neurosyphilis)
    • (late congenital syphilis, symptomatic
    • (Late congenital syphilis, latent
    • (Late congenital syphilis, unspecified
    • (Congenital syphilis, unspecified
  • (Early syphilis
    • (51.0) Primary genital syphilis
    • (51.1) Primary anal syphilis
    • (Primary syphilis of other sites
    • (mucous membranes
    • (secondary syphilis
    • (Early syphilis, latent
    • (Early syphilis, unspecified
  • (Late syphilis
    • (Cardiovascular syphilis
    • (Symptomatic neurosyphilis
    • (Asymptomatic neurosyphilis
    • (Neurosyphilis, unspecified
      • Gumma (syphilitic) of central nervous system NOS
      • Syphilis (late) of central nervous system NOS
      • Syphiloma of central nervous system NOS
    • (52.7) 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
  • (syphilis
    • (Latent syphilis, unspecified as early or late
    • (Syphilis, unspecified
  • (Gonococcal infection
    • (lower genitourinary tract without periurethral or accessory gland abscess
    • (lower genitourinary tract with periurethral and accessory gland abscess
    • (54.2) Gonococcal pelviperitonitis and other gonococcal genitourinary infections
    • (eye
    • (musculoskeletal system
    • (pharyngitis
    • (rectum
    • (gonococcal infections
    • (Gonococcal infection, unspecified
  • (Chlamydial lymphogranuloma (venereum)
  • (chlamydial diseases
    • (lower genitourinary tract
    • (genitourinary organs
    • (genitourinary tract, unspecified
    • (rectum
    • (pharynx
    • (chlamydial infection of other sites
  • (Chancroid
  • (Granuloma inguinale
  • (Trichomoniasis
    • (Urogenital trichomoniasis
    • (Trichomoniasis of other sites
    • (Trichomoniasis, unspecified
  • (herpes simplex) infection
    • (urogenital tract
    • (rectum
    • (herpesviral infection, unspecified
  • (sexually transmitted diseases, not elsewhere classified
    • (Anogenital (venereal) warts
    • (sexually transmitted diseases
  • (sexually transmitted disease

(A65–A69) Other spirochaetal diseases

(A70–A74) Other diseases caused by chlamydiae

  • (Chlamydia psittaci infection
  • (Trachoma
  • (chlamydiae

(A75–A79) Rickettsioses

A80–B34 – Viral infections

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

  • (Acute poliomyelitis
  • (central nervous system
    • (Creutzfeldt-Jakob disease
    • (Subacute sclerosing panencephalitis
    • (Progressive multifocal leukoencephalopathy
    • (central nervous system
    • (central nervous system, unspecified
  • (Rabies
  • (viral encephalitis
    • (Japanese encephalitis
    • (Western equine encephalitis
    • (Eastern equine encephalitis
    • (St Louis encephalitis
    • (Australian encephalitis
    • (California encephalitis
    • (83.6) Rocio virus disease
    • (83.8) Other mosquito-borne viral encephalitis
    • (83.9) Mosquito-borne viral encephalitis, unspecified
  • (viral encephalitis
    • (Russian spring-summer encephalitis)
    • (Central European tick-borne encephalitis
    • (tick-borne viral encephalitis
    • (Tick-borne viral encephalitis, unspecified
  • (viral encephalitis, not elsewhere classified
  • (viral encephalitis
  • (Viral meningitis
    • (Lymphocytic choriomeningitis
  • (central nervous system, not elsewhere classified
    • (vertigo
  • (central nervous system

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

  • (classical dengue)
  • (Dengue haemorrhagic fever
  • (mosquito-borne viral fevers
    • (Chikungunya virus disease
    • (O'nyong-nyong fever
    • (Venezuelan equine fever
    • (West Nile virus infection
    • (Rift Valley fever
    • (92.8) Other specified mosquito-borne viral fevers
    • (92.9) Mosquito-borne viral fever, unspecified
  • (arthropod-borne viral fevers, not elsewhere classified
  • (arthropod-borne viral fever
  • (Yellow fever
  • (Arenaviral haemorrhagic fever
  • (viral haemorrhagic fevers, not elsewhere classified
    • (Crimean-Congo haemorrhagic fever
    • (Omsk haemorrhagic fever
    • (Kyasanur Forest disease
    • (Marburg virus disease
    • (98.4) Ebola virus disease
    • (Haemorrhagic fever with renal syndrome
  • (viral haemorrhagic fever

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

  • (herpes simplex) infections
    • (Eczema herpeticum
    • (00.1) Herpesviral vesicular dermatitis
    • (00.2) Herpesviral gingivostomatitis and pharyngotonsillitis
    • (Herpesviral meningitis
    • (Herpesviral encephalitis
    • (Herpesviral ocular disease
    • (herpesviral disease
    • (herpesviral infection
    • (Herpesviral infection, unspecified
  • (chickenpox)
    • (meningitis
    • (encephalitis
    • (pneumonia
    • (complications
    • (complication
  • (herpes zoster)
    • (encephalitis
    • (meningitis
    • (nervous system involvement
    • (ocular disease
    • (zoster
    • (complications
    • (complication
  • (Smallpox
  • (Monkeypox
  • (Measles
  • (German measles)
  • (Viral warts
  • (lesions, not elsewhere classified
  • (mucous membrane lesions

(B15–B19) Viral hepatitis

  • (Acute hepatitis A
  • (Acute hepatitis B
  • (viral hepatitis
    • (17.0) Acute delta-(super)infection of hepatitis B carrier
    • (hepatitis C
    • (hepatitis E
  • (Chronic viral hepatitis
  • (viral hepatitis

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

  • (parasitic diseases
    • (mycobacterial infection
    • (bacterial infections
    • (cytomegaloviral disease
    • (viral infections
    • (candidiasis
    • (mycoses
    • (Pneumocystis pneumonia
    • (infections
    • (parasitic diseases
    • (parasitic disease
  • (malignant neoplasms
    • (Kaposi's sarcoma
    • (Burkitt's lymphoma
    • (non-Hodgkin's lymphoma
    • (haematopoietic and related tissue
    • (malignant neoplasms
    • (malignant neoplasms
    • (malignant neoplasm
  • (Human Immunodeficiency Virus (HIV) disease Resulting in other specified diseases
    • (encephalopathy
    • (lymphoid interstitial pneumonitis
    • (wasting syndrome
    • (HIV disease resulting in multiple diseases classified elsewhere
  • (Human Immunodeficiency Virus (HIV) disease Resulting in other conditions
    • (Acute HIV infection syndrome
    • (lymphadenopathy
    • (immunological abnormalities, not elsewhere classified
    • (HIV disease resulting in other specified conditions
  • (Human Immunodeficiency Virus (HIV) Disease

(B25–B34) Other viral diseases

  • (Cytomegaloviral disease
  • (Mumps
  • (Infectious mononucleosis
  • (Viral conjunctivitis
  • (viral diseases, not elsewhere classified
    • (Epidemic myalgia
    • (33.1) Ross River disease
    • (33.2) Viral carditis
    • (Retrovirus infections, not elsewhere classified
    • (Hantavirus (cardio-)pulmonary syndrome (HPS) (HCPS)
    • (viral diseases
  • (Viral infection of unspecified site

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

(B35–B49) Mycoses

  • (Dermatophytosis
  • (mycoses
    • (Pityriasis versicolor
    • (Tinea nigra
    • (White piedra
    • (Black piedra
    • (superficial mycoses
    • (Superficial mycosis, unspecified
  • (Candidiasis
    • (stomatitis
    • (37.1) Pulmonary candidiasis
    • (nail
    • (vagina
    • (urogenital sites
    • (37.5) Candidal meningitis
    • (37.6) Candidal endocarditis
    • (37.7) Candidal septicaemia
    • (Candidiasis of other sites
    • (Candidiasis, unspecified
  • Dimorphic Fungi
    • (Coccidioidomycosis
    • (Histoplasmosis
    • (Blastomycosis
    • (Paracoccidioidomycosis
    • (Sporotrichosis
  • (Chromomycosis and phaeomycotic abscess
  • (Aspergillosis
  • (Cryptococcosis
  • (Zygomycosis
    • (46.0) Pulmonary mucormycosis
    • (Rhinocerebral mucormycosis
    • (46.2) Gastrointestinal mucormycosis
    • (Cutaneous mucormycosis
    • (46.4) Disseminated mucormycosis
    • (Mucormycosis, unspecified
    • (46.8) Other zygomycoses
    • (Zygomycosis, unspecified
  • (Mycetoma
  • (mycoses, not elsewhere classified
  • (mycosis

(B50–B64) Protozoal diseases

  • (malaria
  • (malaria
  • (malaria
  • (malaria
  • (malaria
  • (Leishmaniasis
    • (Visceral leishmaniasis
    • (Cutaneous leishmaniasis
    • (Mucocutaneous leishmaniasis
    • (Leishmaniasis, unspecified
  • (African trypanosomiasis
  • (Chagas' disease
  • (Toxoplasmosis
  • (Pneumocystosis
  • (protozoal diseases, not elsewhere classified
  • (protozoal disease

(B65–B83) Helminthiases

  • (bilharziasis)
    • (Schistosoma haematobium (urinary schistosomiasis)
    • (Schistosoma mansoni (intestinal schistosomiasis)
    • (Schistosoma japonicum
    • (Cercarial dermatitis
    • (schistosomiases
    • (Schistosomiasis, unspecified
  • (fluke infections
    • (Opisthorchiasis
    • (Clonorchiasis
    • (Dicrocoeliasis
    • (Fascioliasis
    • (Paragonimiasis
    • (Fasciolopsiasis
    • (fluke infections
  • (Echinococcosis
  • (Taeniasis
  • (Cysticercosis
  • (sparganosis
    • (Diphyllobothriasis
    • (Sparganosis
  • (cestode infections
  • (Dracunculiasis
  • (Onchocerciasis
  • (Filariasis
    • (Wuchereria bancrofti
    • (Brugia malayi
    • (Brugia timori
    • (Loiasis
    • (Mansonelliasis
    • (filariases
    • (Filariasis, unspecified
  • (Trichinellosis
  • (Hookworm diseases
  • (Ascariasis
  • (Strongyloidiasis
  • (Trichuriasis
  • (Enterobiasis
  • (helminthiases, not elsewhere classified
    • (Anisakiasis
    • (capillariasis
    • (Trichostrongyliasis
    • (angiostrongyliasis
    • (helminthiases
    • (helminthiases
  • (parasitism
  • (helminthiases

(B85–B89) Pediculosis, acariasis and other infestations

B90–B99 – Sequelae, and diseases classified elsewhere

(B90–B94) Sequelae of infectious and parasitic diseases

  • (tuberculosis
  • (poliomyelitis
  • (leprosy
  • (parasitic diseases
    • (trachoma
    • (viral encephalitis
    • (viral hepatitis
    • (parasitic diseases
    • (parasitic disease

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

  • (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
    • (group D, as the cause of diseases classified to other chapters
    • (Streptococcus pneumoniae as the cause of diseases classified to other chapters
    • (streptococcus as the cause of diseases classified to other chapters
    • (streptococcus as the cause of diseases classified to other chapters
    • (Staphylococcus aureus as the cause of diseases classified to other chapters
    • (staphylococcus as the cause of diseases classified to other chapters
    • (staphylococcus as the cause of diseases classified to other chapters
  • (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
    • (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
    • (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
    • (Coronavirus as the cause of diseases classified to other chapters
    • (Retrovirus as the cause of diseases classified to other chapters
    • (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
    • (viral agents as the cause of diseases classified to other chapters

(B99) Other infectious diseases

  • (99) Other and unspecified infectious diseases

See also

References

Template:Gram-negative non-proteobacterial bacterial diseases

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