Tuberculous meningoencephalitis

This code represents a severe form of tuberculosis affecting both the meninges and the brain parenchyma. It involves inflammation and infection of the membranes surrounding the brain and spinal cord, as well as the brain tissue itself, caused by Mycobacterium tuberculosis.

Use this code when documentation explicitly states a diagnosis of tuberculous meningoencephalitis. This diagnosis is typically supported by cerebrospinal fluid (CSF) analysis, neuroimaging findings (e.g., MRI, CT scan showing meningeal enhancement or tuberculomas), and/or positive cultures for M. tuberculosis from CSF or brain biopsy.

• Differentiate from tuberculous meningitis (G01) or other forms of CNS tuberculosis.
• Always sequence this code first if it is the primary reason for the encounter.
• Ensure documentation specifies involvement of both meninges and brain parenchyma; otherwise, a more specific code for tuberculous meningitis may be appropriate.