U.S. ICD-10-CM · FY 2027

A88 ICD-10-CM Code: Other viral infections of central nervous system, not elsewhere classified

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

A88

Other viral infections of central nervous system, not elsewhere classified

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where A88 sits

  1. 1

    Chapter 1

    Certain infectious and parasitic diseases (A00-B99)

  2. 2

    Section

    Viral and prion infections of the central nervous system (A80-A89)

  3. 3

    Category A88

    Other viral infections of central nervous system, not elsewhere classified

  4. 4

    Code A88

    Other viral infections of central nervous system, not elsewhere classified

More specific choices

Codes under A88

A88 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for A88.

Code first

No “code first” instruction is listed for A88.

Use additional code

No “use additional code” instruction is listed for A88.

Excludes1

Conditions that should not be reported together with this code.

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

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for A88.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code A88 mean?

A88 is the FY 2027 U.S. ICD-10-CM code for “Other viral infections of central nervous system, not elsewhere classified.”

Is A88 a billable or specific ICD-10-CM code?

No. A88 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is A88 located in ICD-10-CM?

A88 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Viral and prion infections of the central nervous system (A80-A89) (A80–A89), under category A88, Other viral infections of central nervous system, not elsewhere classified.

What coding notes are listed for A88?

No inclusion terms are listed for A88 in this reference record. No code-first instruction is listed. Excludes1 notes: viral encephalitis NOS (A86); viral meningitis NOS (A87.9). No Excludes2 note is listed.

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