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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  • B36.2—

    White piedra

  • B36.3—

    Black piedra

  • B36.8—

    Other specified superficial mycoses

  • B36.9—

    Superficial mycosis, unspecified

  • B37.0—

    Candidal stomatitis

  • B37.1—

    Pulmonary candidiasis

  • B37.2—

    Candidiasis of skin and nail

  • B37.31—

    Acute candidiasis of vulva and vagina

  • B37.32—

    Chronic candidiasis of vulva and vagina

  • 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

  • B37.81—

    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

  • B38.0—

    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

  • B38.81—

    Prostatic coccidioidomycosis

  • B38.89—

    Other forms of coccidioidomycosis

  • B38.9—

    Coccidioidomycosis, unspecified

  • B39.0—

    Acute pulmonary histoplasmosis capsulati

  • B39.1—

    Chronic pulmonary histoplasmosis capsulati

  • B39.2—

    Pulmonary histoplasmosis capsulati, unspecified

  • B39.3—

    Disseminated histoplasmosis capsulati

  • B39.4—

    Histoplasmosis capsulati, unspecified

  • B39.5—

    Histoplasmosis duboisii

  • B39.9—

    Histoplasmosis, unspecified

  • B40.0—

    Acute pulmonary blastomycosis

  • B40.1—

    Chronic pulmonary blastomycosis

  • B40.2—

    Pulmonary blastomycosis, unspecified

  • B40.3—

    Cutaneous blastomycosis

  • B40.7—

    Disseminated blastomycosis

  • B40.81—

    Blastomycotic meningoencephalitis

  • B40.89—

    Other forms of blastomycosis

  • B40.9—

    Blastomycosis, unspecified

  • B41.0—

    Pulmonary paracoccidioidomycosis

  • B41.7—

    Disseminated paracoccidioidomycosis

  • B41.8—

    Other forms of paracoccidioidomycosis

  • B41.9—

    Paracoccidioidomycosis, unspecified

  • B42.0—

    Pulmonary sporotrichosis

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