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- A41.9 Sepsis, unspecified
- Septicemia NOS
A42 Actinomycosis
- Excludes1: actinomycetoma (B47.1)
- A42.0 Pulmonary actinomycosis
- A42.1 Abdominal actinomycosis
- A42.2 Cervicofacial actinomycosis
- A42.7 Actinomycotic sepsis
- A42.8 Other forms of actinomycosis
- A42.81 Actinomycotic meningitis
- A42.82 Actinomycotic encephalitis
- A42.89 Other forms of actinomycosis
- A42.9 Actinomycosis, unspecified
A43 Nocardiosis
- A43.0 Pulmonary nocardiosis
- A43.1 Cutaneous nocardiosis
- A43.8 Other forms of nocardiosis
- A43.9 Nocardiosis, unspecified
A44 Bartonellosis
- A44.0 Systemic bartonellosis
- Oroya fever
- A44.1 Cutaneous and mucocutaneous bartonellosis
- Verruga peruana
- A44.8 Other forms of bartonellosis
- A44.9 Bartonellosis, unspecified
A46 Erysipelas
- Excludes1: postpartum or puerperal erysipelas (O86.89)
A48 Other bacterial diseases, not elsewhere classified
- Excludes1: actinomycetoma (B47.1)
- A48.0 Gas gangrene
- Clostridial cellulitis
- Clostridial myonecrosis
- A48.1 Legionnaires' disease
- A48.2 Nonpneumonic Legionnaires' disease [Pontiac fever]
- A48.3 Toxic shock syndrome
- Use additional code to identify the organism (B95, B96)
- Excludes1: endotoxic shock NOS (R57.8)
- sepsis NOS (A41.9)
- A48.4 Brazilian purpuric fever
- Systemic Hemophilus aegyptius infection
- A48.5 Other specified botulism
