A00–B99: Certain Infectious and Parasitic Diseases
Chapter 1 of ICD-10-CM 2027, 1,309 codes in 22 blocks.
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Chapter instructions
Includes: conditions that are coded here
- diseases generally recognized as communicable or transmissible
Excludes2: not included here, code separately if applicable
- 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)
Use additional code: add a second code for this, listed after this one
- code to identify resistance to antimicrobial drugs (Z16.-)
Codes in this chapter
All codesBillable only1,309 results
- A27Leptospirosis
- A27.0Leptospirosis icterohemorrhagica
- A27.8Other forms of leptospirosis
- A27.81Aseptic meningitis in leptospirosis
- A27.89Other forms of leptospirosis
- A27.9Leptospirosis, unspecified
- A28Other zoonotic bacterial diseases, not elsewhere classified
- A28.0Pasteurellosis
- A28.1Cat-scratch disease
- A28.2Extraintestinal yersiniosis
- A28.8Other specified zoonotic bacterial diseases, not elsewhere classified
- A28.9Zoonotic bacterial disease, unspecified
- A30Leprosy [Hansen's disease]
- A30.0Indeterminate leprosy
- A30.1Tuberculoid leprosy
- A30.2Borderline tuberculoid leprosy
- A30.3Borderline leprosy
- A30.4Borderline lepromatous leprosy
- A30.5Lepromatous leprosy
- A30.8Other forms of leprosy
- A30.9Leprosy, unspecified
- A31Infection due to other mycobacteria
- A31.0Pulmonary mycobacterial infection
- A31.1Cutaneous mycobacterial infection
- A31.2Disseminated mycobacterium avium-intracellulare complex (DMAC)
- A31.8Other mycobacterial infections
- A31.9Mycobacterial infection, unspecified
- A32Listeriosis
- A32.0Cutaneous listeriosis
- A32.1Listerial meningitis and meningoencephalitis
- A32.11Listerial meningitis
- A32.12Listerial meningoencephalitis
- A32.7Listerial sepsis
- A32.8Other forms of listeriosis
- A32.81Oculoglandular listeriosis
- A32.82Listerial endocarditis
- A32.89Other forms of listeriosis
- A32.9Listeriosis, unspecified
- A33Tetanus neonatorum
- A34Obstetrical tetanus
- A35Other tetanus
- A36Diphtheria
- A36.0Pharyngeal diphtheria
- A36.1Nasopharyngeal diphtheria
- A36.2Laryngeal diphtheria
- A36.3Cutaneous diphtheria
- A36.8Other diphtheria
- A36.81Diphtheritic cardiomyopathy
- A36.82Diphtheritic radiculomyelitis
- A36.83Diphtheritic polyneuritis