2026 ICD-10-CM Diagnosis Code A88Other viral infections of central nervous system, not elsewhere classified

ICD-10-CM Codes›A00–B99›A80-A89›A88

ICD-10-CM A88
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A88 is a non-billable ICD-10-CM category code for other viral infections of central nervous system, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as A88.0, A88.1, and A88.8.

Code Identity

ICD-10-CM Code
A88
Billable Status
No — Non-Billable Category
Code Describes
Other viral infections of central nervous system, not elsewhere classified
Chapter
A80-A89
Viral and prion infections of the central nervous system

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA80-A89Viral and prion infections of the central nervous system
CategoryA88Other viral infections of central nervous system, not elsewhere classified
This CodeA88Other viral infections of central nervous system, not elsewhere classified

Specific Coding for Oth viral infections of central nervous system, NECOverview

Non-specific codes like A88 require more characters. Use one of these billable codes instead:

  • Use A88.0 for Enteroviral exanthematous fever [Boston exanthem]

  • Use A88.1 for Epidemic vertigo

  • Use A88.8 for Other specified viral infections of central nervous system

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • viral encephalitis NOS A86
  • viral meningitis NOS A87.9

Patient EducationClinical

Neurologic Diseases

The brain, spinal cord, and nerves make up the nervous system. Together they control all the workings of the body. When something goes wrong with a part of your nervous system, you can have trouble moving, speaking, swallowing, breathing, or learning. You can also have problems with your memory, senses, or mood.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About A88Overview

Is A88 a billable code?

No. This is a category header that groups the codes for other viral infections of central nervous system, not elsewhere classified, and headers cannot be submitted on claims. Claims for other viral infections of central nervous system, not elsewhere classified need a more specific code from this category, such as A88.0, A88.1, and A88.8.