Non-Billable / Non-Specific Code
ICD-10-CM A88 is the diagnosis code for Other viral infections of central nervous system, not elsewhere classified. This code falls under the section "Viral and prion infections of the central nervous system" within Chapter 1 — Certain infectious and parasitic diseases (A00-B99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as A88. They are mutually exclusive:
Understanding where A88 sits in the ICD-10-CM classification helps ensure proper coding:
No, A88 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
A88 is the ICD-10-CM diagnosis code for "Other viral infections of central nervous system, not elsewhere classified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
A88 is located in Section A80-A89 — "Viral and prion infections of the central nervous system" within Chapter 1 of the ICD-10-CM Tabular List.
A88 has 3 sub-code(s) that provide more specific detail: A88.0, A88.1, A88.8.
Use A88 when the patients documented diagnosis matches "Other viral infections of central nervous system, not elsewhere classified" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other viral infections of central nervous system, not elsewhere classified is A88.
No, A88 is non-billable. Use a more specific sub-code for primary diagnosis billing.
A88 is in Chapter 1 of the ICD-10-CM Tabular List.
Type 1 Excludes for A88 include: viral encephalitis NOS (A86); viral meningitis NOS (A87.9).
Yes, A88 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.