Other viral infections of central nervous system, not elsewhere classified (A88) ICD-10-CM
The A88 code range covers other viral infections of central nervous system, not elsewhere classified with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the A88 Range 4 codes · 3 billable
About the A88 Code Range
Viral infections affecting the central nervous system appear here when they are not classified elsewhere.
The subdivisions distinguish A88.0, enteroviral exanthematous fever, also called Boston exanthem; A88.1, epidemic vertigo; and A88.8, other specified viral infections of the central nervous system.
Questions About This Page
How many billable codes are in the A88 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the A88 range classify?
The range classifies other viral infections of central nervous system, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
