A15.0

What This Code Means

This code represents a bacterial infection of the lungs caused by tuberculosis, a contagious disease that primarily affects the respiratory system. It indicates active tuberculosis disease localized to the lung tissue.

Coding Tips

• •Verify whether the tuberculosis is drug-susceptible or drug-resistant, as this may require additional coding with a fifth character to specify resistance patterns (e.g., A15.0 for unspecified drug susceptibility)
• •Confirm the patient has pulmonary TB (lung involvement) rather than extrapulmonary TB affecting other organs, as this affects code selection and treatment protocols