Answer: A
The code A17.82 is correct as it is used to specify tuberculous encephalitis. This is the diagnosis in this patient.
Option B is not correct because A15.0 is used to code for the tuberculosis of the lung. Here, tuberculosis is seen in the meninges and not the lungs.
Option C is not correct because A17.1 is used to code meningeal tuberculoma, which is not the diagnosis here.
Option D is not correct because A15.6 is used to code tuberculous pleurisy, which is not the diagnosis here.