ICD-10 Code G03.8 – Meningitis due to other specified causes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G03.8 – Meningitis due to other specified causes
What it is
G03.8 identifies meningitis caused by a specified noninfectious or otherwise named cause that does not fit a more specific meningitis category. Use it when documentation clearly states another identified cause.
Clinical signs
Clinical features may include headache, neck stiffness, fever, photophobia, or altered mental status, but presentation depends on the cause. Clinical features vary; refer to documentation.
When to use this code
Use G03.8 when the provider documents meningitis from a specific cause that is not classified elsewhere and is not the primary infectious meningitis code. It may apply when the chart names an underlying condition or exposure and states meningitis as a result. Check documentation if the cause is unclear.
Do not use for
Do not use this code for meningitis with a documented infectious organism, or when a more specific meningitis code is available. Do not use it if the record only says “meningitis” without a qualifying cause.
Coding tip
Code the documented underlying cause first when instructed by the record or coding guidance, and verify that G03.8 is the best match before assigning it.