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
PrevNext
  • A18.13—

    Tuberculosis of other urinary organs

  • A18.14—

    Tuberculosis of prostate

  • A18.15—

    Tuberculosis of other male genital organs

  • A18.16—

    Tuberculosis of cervix

  • A18.17—

    Tuberculous female pelvic inflammatory disease

  • A18.18—

    Tuberculosis of other female genital organs

  • A18.2—

    Tuberculous peripheral lymphadenopathy

  • A18.31—

    Tuberculous peritonitis

  • A18.32—

    Tuberculous enteritis

  • A18.39—

    Retroperitoneal tuberculosis

  • A18.4—

    Tuberculosis of skin and subcutaneous tissue

  • A18.50—

    Tuberculosis of eye, unspecified

  • A18.51—

    Tuberculous episcleritis

  • A18.52—

    Tuberculous keratitis

  • A18.53—

    Tuberculous chorioretinitis

  • A18.54—

    Tuberculous iridocyclitis

  • A18.59—

    Other tuberculosis of eye

  • A18.6—

    Tuberculosis of (inner) (middle) ear

  • A18.7—

    Tuberculosis of adrenal glands

  • A18.81—

    Tuberculosis of thyroid gland

  • A18.82—

    Tuberculosis of other endocrine glands

  • A18.83—

    Tuberculosis of digestive tract organs, not elsewhere classified

  • A18.84—

    Tuberculosis of heart

  • A18.85—

    Tuberculosis of spleen

  • A18.89—

    Tuberculosis of other sites

  • A19.0—

    Acute miliary tuberculosis of a single specified site

  • A19.1—

    Acute miliary tuberculosis of multiple sites

  • A19.2—

    Acute miliary tuberculosis, unspecified

  • A19.8—

    Other miliary tuberculosis

  • A19.9—

    Miliary tuberculosis, unspecified

  • A20.0—

    Bubonic plague

  • A20.1—

    Cellulocutaneous plague

  • A20.2—

    Pneumonic plague

  • A20.3—

    Plague meningitis

  • A20.7—

    Septicemic plague

  • A20.8—

    Other forms of plague

  • A20.9—

    Plague, unspecified

  • A21.0—

    Ulceroglandular tularemia

  • A21.1—

    Oculoglandular tularemia

  • A21.2—

    Pulmonary tularemia

  • A21.3—

    Gastrointestinal tularemia

  • A21.7—

    Generalized tularemia

  • A21.8—

    Other forms of tularemia

  • A21.9—

    Tularemia, unspecified

  • A22.0—

    Cutaneous anthrax

  • A22.1—

    Pulmonary anthrax

  • A22.2—

    Gastrointestinal anthrax

  • A22.7—

    Anthrax sepsis

  • A22.8—

    Other forms of anthrax

  • A22.9—

    Anthrax, unspecified

PreviousPage 3 of 22Next