Nocardiosis A43- June 6, 2024 by icd10codes.in Nocardiosis A43- Clinical Information Gram positive bacterial infection with bacteria of the genus nocardia. Infections with bacteria of the genus nocardia. Codes A43 Nocardiosis A43.0 Pulmonary nocardiosis A43.1 Cutaneous nocardiosis A43.8 Other forms of nocardiosis A43.9 Nocardiosis, unspecified