ICD-10-CM · FY2027
Chapter 1: Certain infectious and parasitic diseases (A00-B99)
Chapter 1 of the ICD-10-CM Tabular List covers A00-B99 and contains 1,309 codes across 167 categories, of which 1,068 are billable for FY2027.
Use additional code
Report an additional code alongside this code to fully describe the condition. this code is sequenced first.
- code to identify resistance to antimicrobial drugs (Z16.-)
Excludes2 — not included here
The conditions below are not part of this code, but a patient may have both at the same time. When documentation supports it, this code and the excluded code may both be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- 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)
Includes
Conditions classified to this code.
- diseases generally recognized as communicable or transmissible
A00-A09 — Intestinal infectious diseases
- A00Cholera
- A01Typhoid and paratyphoid fevers
- A02Other salmonella infections
- A03Shigellosis
- A04Other bacterial intestinal infections
- A05Other bacterial foodborne intoxications, not elsewhere classified
- A06Amebiasis
- A07Other protozoal intestinal diseases
- A08Viral and other specified intestinal infections
- A09Infectious gastroenteritis and colitis, unspecified
A15-A19 — Tuberculosis
A20-A28 — Certain zoonotic bacterial diseases
A30-A49 — Other bacterial diseases
- A30Leprosy [Hansen's disease]
- A31Infection due to other mycobacteria
- A32Listeriosis
- A33Tetanus neonatorum
- A34Obstetrical tetanus
- A35Other tetanus
- A36Diphtheria
- A37Whooping cough
- A38Scarlet fever
- A39Meningococcal infection
- A40Streptococcal sepsis
- A41Other sepsis
- A42Actinomycosis
- A43Nocardiosis
- A44Bartonellosis
- A46Erysipelas
- A48Other bacterial diseases, not elsewhere classified
- A49Bacterial infection of unspecified site
A50-A64 — Infections with a predominantly sexual mode of transmission
- A50Congenital syphilis
- A51Early syphilis
- A52Late syphilis
- A53Other and unspecified syphilis
- A54Gonococcal infection
- A55Chlamydial lymphogranuloma (venereum)
- A56Other sexually transmitted chlamydial diseases
- A57Chancroid
- A58Granuloma inguinale
- A59Trichomoniasis
- A60Anogenital herpesviral [herpes simplex] infections
- A63Other predominantly sexually transmitted diseases, not elsewhere classified
- A64Unspecified sexually transmitted disease
A65-A69 — Other spirochetal diseases
A70-A74 — Other diseases caused by chlamydiae
A75-A79 — Rickettsioses
A80-A89 — Viral and prion infections of the central nervous system
- A80Acute poliomyelitis
- A81Atypical virus infections of central nervous system
- A82Rabies
- A83Mosquito-borne viral encephalitis
- A84Tick-borne viral encephalitis
- A85Other viral encephalitis, not elsewhere classified
- A86Unspecified viral encephalitis
- A87Viral meningitis
- A88Other viral infections of central nervous system, not elsewhere classified
- A89Unspecified viral infection of central nervous system
A90-A99 — Arthropod-borne viral fevers and viral hemorrhagic fevers
- A90Dengue fever [classical dengue]
- A91Dengue hemorrhagic fever
- A92Other mosquito-borne viral fevers
- A93Other arthropod-borne viral fevers, not elsewhere classified
- A94Unspecified arthropod-borne viral fever
- A95Yellow fever
- A96Arenaviral hemorrhagic fever
- A98Other viral hemorrhagic fevers, not elsewhere classified
- A99Unspecified viral hemorrhagic fever
B00-B09 — Viral infections characterized by skin and mucous membrane lesions
- B00Herpesviral [herpes simplex] infections
- B01Varicella [chickenpox]
- B02Zoster [herpes zoster]
- B03Smallpox
- B04Monkeypox
- B05Measles
- B06Rubella [German measles]
- B07Viral warts
- B08Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified
- B09Unspecified viral infection characterized by skin and mucous membrane lesions
B10 — Other human herpesviruses (B10)
B15-B19 — Viral hepatitis
B20 — Human immunodeficiency virus [HIV] disease (B20)
B25-B34 — Other viral diseases
B35-B49 — Mycoses
- B35Dermatophytosis
- B36Other superficial mycoses
- B37Candidiasis
- B38Coccidioidomycosis
- B39Histoplasmosis
- B40Blastomycosis
- B41Paracoccidioidomycosis
- B42Sporotrichosis
- B43Chromomycosis and pheomycotic abscess
- B44Aspergillosis
- B45Cryptococcosis
- B46Zygomycosis
- B47Mycetoma
- B48Other mycoses, not elsewhere classified
- B49Unspecified mycosis
B50-B64 — Protozoal diseases
- B50Plasmodium falciparum malaria
- B51Plasmodium vivax malaria
- B52Plasmodium malariae malaria
- B53Other specified malaria
- B54Unspecified malaria
- B55Leishmaniasis
- B56African trypanosomiasis
- B57Chagas' disease
- B58Toxoplasmosis
- B59Pneumocystosis
- B60Other protozoal diseases, not elsewhere classified
- B64Unspecified protozoal disease
B65-B83 — Helminthiases
- B65Schistosomiasis [bilharziasis]
- B66Other fluke infections
- B67Echinococcosis
- B68Taeniasis
- B69Cysticercosis
- B70Diphyllobothriasis and sparganosis
- B71Other cestode infections
- B72Dracunculiasis
- B73Onchocerciasis
- B74Filariasis
- B75Trichinellosis
- B76Hookworm diseases
- B77Ascariasis
- B78Strongyloidiasis
- B79Trichuriasis
- B80Enterobiasis
- B81Other intestinal helminthiases, not elsewhere classified
- B82Unspecified intestinal parasitism
- B83Other helminthiases