A85.8 ICD-10-CM Code: Other specified viral encephalitis
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
A85.8Other specified viral encephalitis
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where A85.8 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 A85
Other viral encephalitis, not elsewhere classified
- 4
Code A85.8
Other specified viral encephalitis
Documentation details
Notes for this code
Inclusion terms
- Encephalitis lethargica
- Von Economo-Cruchet disease
Code first
No “code first” instruction is listed for A85.8.
Use additional code
No “use additional code” instruction is listed for A85.8.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for A85.8.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for A85.8.
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 A85.8 mean?
A85.8 is the FY 2027 U.S. ICD-10-CM code for “Other specified viral encephalitis.”
Is A85.8 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, A85.8 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 A85.8 located in ICD-10-CM?
A85.8 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 A85, Other viral encephalitis, not elsewhere classified.
What coding notes are listed for A85.8?
Its listed inclusion terms are Encephalitis lethargica; Von Economo-Cruchet disease. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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