A89 ICD-10-CM Code: Unspecified viral infection of central nervous system
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
A89Unspecified viral infection of central nervous system
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where A89 sits
- 1
Chapter 1
Certain infectious and parasitic diseases (A00-B99)
- 2
Section
Viral and prion infections of the central nervous system (A80-A89)
- 3
Category A89
Unspecified viral infection of central nervous system
- 4
Code A89
Unspecified viral infection of central nervous system
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for A89.
Code first
No “code first” instruction is listed for A89.
Use additional code
No “use additional code” instruction is listed for A89.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for A89.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for A89.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code A89 mean?
A89 is the FY 2027 U.S. ICD-10-CM code for “Unspecified viral infection of central nervous system.”
Is A89 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, A89 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is A89 located in ICD-10-CM?
A89 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Viral and prion infections of the central nervous system (A80-A89) (A80–A89), under category A89, Unspecified viral infection of central nervous system.
What coding notes are listed for A89?
No inclusion terms are listed for A89 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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