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A81 Atypical virus infections of central nervous system

ICD-10-CM category A81 sits in Chapter 1 (Certain infectious and parasitic diseases, A00-B99). It contains 10 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

A81.0 Creutzfeldt-Jakob diseaseA81.8 Other atypical virus infections of central nervous system

Billable codes in A81

CodeDescription
A81.00Creutzfeldt-Jakob disease, unspecified
A81.01Variant Creutzfeldt-Jakob disease
A81.09Other Creutzfeldt-Jakob disease
A81.1Subacute sclerosing panencephalitis
A81.2Progressive multifocal leukoencephalopathy
A81.81Kuru
A81.82Gerstmann-Straussler-Scheinker syndrome
A81.83Fatal familial insomnia
A81.89Other atypical virus infections of central nervous system
A81.9Atypical virus infection of central nervous system, unspecified

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