A32.12

What This Code Means

This is a serious brain infection caused by the bacterium Listeria monocytogenes that affects both the brain tissue and the membranes surrounding the brain and spinal cord. It typically occurs in newborns, elderly people, or those with weakened immune systems.

Coding Tips

• •Verify documentation specifies both meningitis and encephalitis components; if only meningitis is documented, use A32.11 instead
• •This code requires a seventh character for episode of care (A=initial encounter, D=subsequent encounter, S=sequela); confirm the appropriate character with the clinical documentation