ICD-10 Code G00.8 – Other Bacterial Meningitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G00.8 – Other bacterial meningitis
What it is
G00.8 identifies bacterial meningitis caused by organisms not named in the more specific ICD-10 codes. Use it when the record clearly states other bacterial meningitis and no better code is documented.
Clinical signs
Typical findings include fever, headache, neck stiffness, and altered mental status. Clinical features vary; refer to documentation, especially when the causative organism is not specified.
When to use this code
Use this code when the provider documents bacterial meningitis but does not identify a specific organism that has its own code. It also fits cases labeled as other bacterial meningitis in the assessment or discharge diagnosis. If the organism is named, code the organism-specific option instead.
Do not use for
Do not use G00.8 for viral, fungal, or noninfectious meningitis. Do not use it when documentation supports a more specific bacterial meningitis code.
Coding tip
Check the final diagnosis and microbiology results before assigning G00.8; a named organism usually requires a more specific code.