Listerial meningoencephalitis

This code represents a severe central nervous system infection caused by the bacterium Listeria monocytogenes, specifically affecting both the meninges (membranes surrounding the brain and spinal cord) and the brain tissue itself. It is a serious condition that can lead to significant neurological deficits and has a high mortality rate, particularly in vulnerable populations.

This code is appropriate for documenting cases where Listeria monocytogenes has been identified as the causative agent of both meningitis and encephalitis. Documentation should clearly indicate involvement of both the meninges and brain parenchyma, often supported by cerebrospinal fluid analysis, neuroimaging, and microbiological culture results.

• Ensure documentation explicitly states both "meningitis" and "encephalitis" due to Listeria.
• Do not confuse with Listeria meningitis without brain involvement (A32.11) or other bacterial meningitides.
• Sequence this code as the primary diagnosis when it is the reason for the encounter, followed by any associated neurological complications.