ICD-10 diagnosis code
A81.9 Atypical virus infection of central nervous system, unspecified
A81.9 is the ICD-10 code for Atypical virus infection of central nervous system, unspecified. It is a four-character subcategory of A81 (Atypical virus infections of central nervous system), the most specific level in the WHO edition. It belongs to the block A80–A89 (Viral infections of the central nervous system) in Chapter I, Certain infectious and parasitic diseases.
- Code type
- Subcategory (4 characters)
- Chapter
- I · A00–B99
- Classification
- WHO ICD-10, 2019 version
What A81.9 includes
Conditions and terms that are coded here.
- Prion disease of central nervous system NOS
A81.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
A81.9Atypisk virusinfektion i centrala nervsystemet, ospecificerad
A81.9Uspesifisert atypisk virusinfeksjon i sentralnervesystemet
DA819Atypisk virusinfektion i centralnervesystemet UNS
- DA819APrionsygdom i centralnervesystemet UNS
A81.9Määrittämätön keskushermoston prionisairaus tai atyyppinen virusinfektio
A81.9Atypische Virusinfektion des Zentralnervensystems, nicht näher bezeichnet
A81.9Infection atypiques à virus, du système nerveux central, sans précision
A81.9atypische virusinfectie van centraal zenuwstelsel, niet-gespecificeerd
A81.9Atypical virus infection of central nervous system, unspecified
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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