NPI Atlas

A87 – Viral meningitis

ICD-10-CM 2027 diagnosis code · Viral and prion infections of the central nervous system

Non-billable header

ICD-10-CM code A87

Code: A87 (claims format: A87)
Description: Viral meningitis
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 1. Certain infectious and parasitic diseases (A00-B99)
Block: A80-A89 Viral and prion infections of the central nervous system

Billable codes under A87

A87 is a header code and cannot be used on claims. Choose the most specific code:

A87.0 – Enteroviral meningitisBillable
A87.1 – Adenoviral meningitisBillable
A87.2 – Lymphocytic choriomeningitisBillable
A87.8 – Other viral meningitisBillable
A87.9 – Viral meningitis, unspecifiedBillable

Notes for A87

Excludes1 (not coded here):

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)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block A80-A89

Excludes1 (not coded here):

postpolio syndrome (G14)
sequelae of poliomyelitis (B91)
sequelae of viral encephalitis (B94.1)

Frequently asked questions

What is ICD-10 code A87?

A87 is the ICD-10-CM code for viral meningitis, in the block A80-A89 (Viral and prion infections of the central nervous system).

Is A87 a billable code?

No. A87 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.