Other viral meningitis

This diagnosis code signifies inflammation of the meninges (the membranes surrounding the brain and spinal cord) caused by a viral agent not specified elsewhere. It represents a form of aseptic meningitis where a viral etiology is confirmed or strongly suspected, but the specific virus is not identified or does not have a more precise ICD-10-CM code.

Use this code when documentation indicates viral meningitis, but the specific viral pathogen is not documented or a more specific code for the identified virus is unavailable. This is appropriate when laboratory tests confirm a viral etiology (e.g., CSF analysis showing lymphocytic pleocytosis with negative bacterial cultures) but do not pinpoint the exact virus.

• Ensure documentation explicitly states "viral meningitis" or "aseptic meningitis" with a presumed viral cause.
• Do not use if a specific viral agent (e.g., enterovirus, mumps virus) is identified and has a dedicated ICD-10-CM code.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter, followed by any associated symptoms or complications.