A89 – Unspecified viral infection of central nervous system
ICD-10-CM 2027 diagnosis code · Viral and prion infections of the central nervous system
ICD-10-CM code
A89
- Code
A89(claims format:A89)- Description
- Unspecified viral infection of central nervous system
- Billable
- Yes – valid for HIPAA-covered transactions
- 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
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block A80-A89
Index terms for A89
Entries in the ICD-10-CM alphabetic index that lead to this code:
Frequently asked questions
What is ICD-10 code A89?
A89 is the ICD-10-CM code for unspecified viral infection of central nervous system, in the block A80-A89 (Viral and prion infections of the central nervous system).
Is A89 a billable code?
Yes. A89 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
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.