A87

ICD-10Non-billable category

Viral meningitis

Official ICD-10-CM descriptor (FY2026)

Viral meningitis

A87 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.

meningitis due to herpesvirus [herpes simplex] (B00.3)
meningitis due to herpesvirus [herpes simplex] (B00.3)
meningitis due to measles virus (B05.1)
meningitis due to mumps virus (B26.1)
meningitis due to poliomyelitis virus (A80.-)
meningitis due to zoster (B02.1)

More specific codes under A87

Where this code sits

Chapter: 1. Certain infectious and parasitic diseases (A00-B99)
Block: Viral and prion infections of the central nervous system (A80-A89)

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Source

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.