All ICD10 Codes
Chapter 1

A00–B99: Certain Infectious and Parasitic Diseases

Certain Infectious and Parasitic Diseases diagnostic classification updated for 2026.

Chapter Instructions

Includes
  • diseases generally recognized as communicable or transmissible
Excludes1(Not coded here. Use a different code.)
  • certain localized infections - see body system-related chapters
Excludes2(Not included here. Code separately if applicable.)
  • 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 Code
  • code to identify resistance to antimicrobial drugs (Z16.-)
All CodesBillable Only
Internal Codes
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  • B65.0—

    Schistosomiasis due to Schistosoma haematobium [urinary schistosomiasis]

  • B65.1—

    Schistosomiasis due to Schistosoma mansoni [intestinal schistosomiasis]

  • B65.2—

    Schistosomiasis due to Schistosoma japonicum

  • B65.3—

    Cercarial dermatitis

  • B65.8—

    Other schistosomiasis

  • B65.9—

    Schistosomiasis, unspecified

  • B66.0—

    Opisthorchiasis

  • B66.1—

    Clonorchiasis

  • B66.2—

    Dicroceliasis

  • B66.3—

    Fascioliasis

  • B66.4—

    Paragonimiasis

  • B66.5—

    Fasciolopsiasis

  • B66.8—

    Other specified fluke infections

  • B66.9—

    Fluke infection, unspecified

  • B67.0—

    Echinococcus granulosus infection of liver

  • B67.1—

    Echinococcus granulosus infection of lung

  • B67.2—

    Echinococcus granulosus infection of bone

  • B67.31—

    Echinococcus granulosus infection, thyroid gland

  • B67.32—

    Echinococcus granulosus infection, multiple sites

  • B67.39—

    Echinococcus granulosus infection, other sites

  • B67.4—

    Echinococcus granulosus infection, unspecified

  • B67.5—

    Echinococcus multilocularis infection of liver

  • B67.61—

    Echinococcus multilocularis infection, multiple sites

  • B67.69—

    Echinococcus multilocularis infection, other sites

  • B67.7—

    Echinococcus multilocularis infection, unspecified

  • B67.8—

    Echinococcosis, unspecified, of liver

  • B67.90—

    Echinococcosis, unspecified

  • B67.99—

    Other echinococcosis

  • B68.0—

    Taenia solium taeniasis

  • B68.1—

    Taenia saginata taeniasis

  • B68.9—

    Taeniasis, unspecified

  • B69.0—

    Cysticercosis of central nervous system

  • B69.1—

    Cysticercosis of eye

  • B69.81—

    Myositis in cysticercosis

  • B69.89—

    Cysticercosis of other sites

  • B69.9—

    Cysticercosis, unspecified

  • B70.0—

    Diphyllobothriasis

  • B70.1—

    Sparganosis

  • B71.0—

    Hymenolepiasis

  • B71.1—

    Dipylidiasis

  • B71.8—

    Other specified cestode infections

  • B71.9—

    Cestode infection, unspecified

  • B72—

    Dracunculiasis

  • B73.00—

    Onchocerciasis with eye involvement, unspecified

  • B73.01—

    Onchocerciasis with endophthalmitis

  • B73.02—

    Onchocerciasis with glaucoma

  • B73.09—

    Onchocerciasis with other eye involvement

  • B73.1—

    Onchocerciasis without eye disease

  • B74.0—

    Filariasis due to Wuchereria bancrofti

  • B74.1—

    Filariasis due to Brugia malayi

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