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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  • B34.2—

    Coronavirus infection, unspecified

  • B34.3—

    Parvovirus infection, unspecified

  • B34.4—

    Papovavirus infection, unspecified

  • B34.8—

    Other viral infections of unspecified site

  • B34.9—

    Viral infection, unspecified

  • B35—

    Dermatophytosis

  • B35.0—

    Tinea barbae and tinea capitis

  • B35.1—

    Tinea unguium

  • B35.2—

    Tinea manuum

  • B35.3—

    Tinea pedis

  • B35.4—

    Tinea corporis

  • B35.5—

    Tinea imbricata

  • B35.6—

    Tinea cruris

  • B35.8—

    Other dermatophytoses

  • B35.9—

    Dermatophytosis, unspecified

  • B36—

    Other superficial mycoses

  • B36.0—

    Pityriasis versicolor

  • B36.1—

    Tinea nigra

  • B36.2—

    White piedra

  • B36.3—

    Black piedra

  • B36.8—

    Other specified superficial mycoses

  • B36.9—

    Superficial mycosis, unspecified

  • B37—

    Candidiasis

  • B37.0—

    Candidal stomatitis

  • B37.1—

    Pulmonary candidiasis

  • B37.2—

    Candidiasis of skin and nail

  • B37.3—

    Candidiasis of vulva and vagina

  • B37.31—

    Acute candidiasis of vulva and vagina

  • B37.32—

    Chronic candidiasis of vulva and vagina

  • B37.4—

    Candidiasis of other urogenital sites

  • B37.41—

    Candidal cystitis and urethritis

  • B37.42—

    Candidal balanitis

  • B37.49—

    Other urogenital candidiasis

  • B37.5—

    Candidal meningitis

  • B37.6—

    Candidal endocarditis

  • B37.7—

    Candidal sepsis

  • B37.8—

    Candidiasis of other sites

  • B37.81—

    Candidal esophagitis

  • B37.82—

    Candidal enteritis

  • B37.83—

    Candidal cheilitis

  • B37.84—

    Candidal otitis externa

  • B37.89—

    Other sites of candidiasis

  • B37.9—

    Candidiasis, unspecified

  • B38—

    Coccidioidomycosis

  • B38.0—

    Acute pulmonary coccidioidomycosis

  • B38.1—

    Chronic pulmonary coccidioidomycosis

  • B38.2—

    Pulmonary coccidioidomycosis, unspecified

  • B38.3—

    Cutaneous coccidioidomycosis

  • B38.4—

    Coccidioidomycosis meningitis

  • B38.7—

    Disseminated coccidioidomycosis

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