ICD-10 Code A32.11 – Listerial meningitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A32.11 – Listerial meningitis
What it is
A32.11 identifies meningitis caused by Listeria monocytogenes. Use it when documentation confirms Listeria infection involving the meninges, not just nonspecific bacterial meningitis.
Clinical signs
Clinical features may include fever, headache, neck stiffness, altered mental status, or other meningeal signs. Clinical features vary; refer to documentation.
When to use this code
Use A32.11 when the provider documents listerial meningitis, Listeria meningitis, or meningitis due to Listeria monocytogenes. It is appropriate when the diagnosis is confirmed in the record, even if the note also describes sepsis or other complications. Check documentation if the organism is only suspected.
Do not use for
Do not use this code for general meningitis without a documented Listeria cause. It is also incorrect for isolated Listeria infection outside the central nervous system.
Coding tip
Code the organism-specific diagnosis only when the provider clearly links meningitis to Listeria.