A88
ICD-10Non-billable categoryOth viral infections of central nervous system, NEC
Official ICD-10-CM descriptor (FY2026)
Other viral infections of central nervous system, not elsewhere classified
A88 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- viral encephalitis NOS (A86)
- viral meningitis NOS (A87.9)
More specific codes under A88
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.