A89
✓ Billable
Unspecified viral infection of central nervous system
ICD-10-CM · FY2026 · Certain Infectious and Parasitic Diseases
Code
A89
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Certain Infectious and Parasitic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code A89?
ICD-10-CM code A89 represents Unspecified viral infection of central nervous system. It is a billable diagnosis code in the Certain Infectious and Parasitic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is A89 billable?
Yes. A89 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is A89 in?
A89 belongs to the Certain Infectious and Parasitic Diseases chapter (A00–B99) of ICD-10-CM.
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