The block A80–A89 of ICD-10 is titled “Viral infections of the central nervous system”. It is part of Chapter I, Certain infectious and parasitic diseases, and holds 10 groups.
What A80–A89 excludes
Conditions that look similar but belong under another code.
Codes in A80–A89
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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