A81.8Header code — not billable
Other atypical virus infections of central nervous system
- Chapter
- 1. Certain infectious and parasitic diseases
- Category
- A81
- Effective date
- October 1, 2026
Related codes in category A81
A81Atypical virus infections of central nervous systemA81.0Creutzfeldt-Jakob diseaseA81.00Creutzfeldt-Jakob disease, unspecifiedYesA81.01Variant Creutzfeldt-Jakob diseaseYesA81.09Other Creutzfeldt-Jakob diseaseYesA81.1Subacute sclerosing panencephalitisYesA81.2Progressive multifocal leukoencephalopathyYesA81.81KuruYesA81.82Gerstmann-Straussler-Scheinker syndromeYesA81.83Fatal familial insomniaYesA81.89Other atypical virus infections of central nervous systemYesA81.9Atypical virus infection of central nervous system, unspYes
Frequently asked questions
What is ICD-10 code A81.8?
A81.8 is an ICD-10-CM diagnosis code for Other atypical virus infections of central nervous system.
Is A81.8 a billable code?
No. A81.8 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is A81.8 in?
A81.8 falls under Chapter 1: Certain infectious and parasitic diseases.
When did A81.8 become effective?
A81.8 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to A81.8?
A81.8 belongs to category A81, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.