A88.8 ICD-10-CM Code: Other specified viral infections of central nervous system

A88.8 is the ICD-10-CM diagnosis code for other specified viral infections of central nervous system. This code is used for viral infections affecting the brain and spinal cord that don't fit into other specific viral categories. It represents less common or atypical viral infections of the central nervous system that have been identified but don't have their own dedicated code. A88.8 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering viral and prion infections of the central nervous system (a80-a89).

A88.8 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Always verify the specific viral agent identified in the documentation before assigning this code, as more specific codes may be available for common viruses like enterovirus, herpes simplex, or West Nile virus.