Pulmonary nocardiosis

This code signifies a lung infection caused by bacteria of the Nocardia genus. It typically presents as a subacute or chronic pneumonia, often with cavitation, and can disseminate to other organs, particularly in immunocompromised individuals.

Apply this code when documentation confirms a diagnosis of nocardiosis specifically affecting the lungs. This diagnosis is typically supported by microbiological culture identifying Nocardia species from respiratory specimens (e.g., sputum, bronchoalveolar lavage) or lung biopsy.

• Ensure documentation specifies pulmonary involvement; if disseminated, additional codes for other affected sites may be necessary.
• Distinguish from other fungal or bacterial pneumonias; definitive Nocardia identification is crucial.
• Consider the patient's immune status, as this can influence the clinical presentation and treatment, though not directly coded here.