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 only1,068 results
- A41.4Sepsis due to anaerobes
- A41.50Gram-negative sepsis, unspecified
- A41.51Sepsis due to Escherichia coli [E. coli]
- A41.52Sepsis due to Pseudomonas
- A41.53Sepsis due to Serratia
- A41.54Sepsis due to Acinetobacter baumannii
- A41.59Other Gram-negative sepsis
- A41.81Sepsis due to Enterococcus
- A41.89Other specified sepsis
- A41.9Sepsis, unspecified organism
- A42.0Pulmonary actinomycosis
- A42.1Abdominal actinomycosis
- A42.2Cervicofacial actinomycosis
- A42.7Actinomycotic sepsis
- A42.81Actinomycotic meningitis
- A42.82Actinomycotic encephalitis
- A42.89Other forms of actinomycosis
- A42.9Actinomycosis, unspecified
- A43.0Pulmonary nocardiosis
- A43.1Cutaneous nocardiosis
- A43.8Other forms of nocardiosis
- A43.9Nocardiosis, unspecified
- A44.0Systemic bartonellosis
- A44.1Cutaneous and mucocutaneous bartonellosis
- A44.8Other forms of bartonellosis
- A44.9Bartonellosis, unspecified
- A46Erysipelas
- A48.0Gas gangrene
- A48.1Legionnaires' disease
- A48.2Nonpneumonic Legionnaires' disease [Pontiac fever]
- A48.3Toxic shock syndrome
- A48.4Brazilian purpuric fever
- A48.51Infant botulism
- A48.52Wound botulism
- A48.8Other specified bacterial diseases
- A49.01Methicillin susceptible Staphylococcus aureus infection, unspecified site
- A49.02Methicillin resistant Staphylococcus aureus infection, unspecified site
- A49.1Streptococcal infection, unspecified site
- A49.2Hemophilus influenzae infection, unspecified site
- A49.3Mycoplasma infection, unspecified site
- A49.8Other bacterial infections of unspecified site
- A49.9Bacterial infection, unspecified
- A50.01Early congenital syphilitic oculopathy
- A50.02Early congenital syphilitic osteochondropathy
- A50.03Early congenital syphilitic pharyngitis
- A50.04Early congenital syphilitic pneumonia
- A50.05Early congenital syphilitic rhinitis
- A50.06Early cutaneous congenital syphilis
- A50.07Early mucocutaneous congenital syphilis
- A50.08Early visceral congenital syphilis