Meningitis due to other specified causes

This code signifies inflammation of the meninges resulting from an identified, non-infectious etiology not classified elsewhere. It encompasses meningitis caused by specific chemical irritants, systemic diseases, or other defined agents that are not bacterial, viral, fungal, or parasitic in origin.

This code is appropriate when documentation clearly states meningitis due to a specific, non-infectious cause such as chemical meningitis following intrathecal drug administration, meningitis associated with a systemic autoimmune disorder, or drug-induced aseptic meningitis. The physician's notes must explicitly identify the causative agent or underlying condition.

• Always sequence the underlying cause or specific agent first, if applicable, followed by this code.
• Do not use this code for infectious meningitis; instead, refer to codes within categories G00-G02.
• Ensure the documentation specifies the "other specified cause" to support the use of this code, rather than an unspecified meningitis code.