A84

Non-billable

Tick-borne viral encephalitis

A84 is the ICD-10-CM code for Tick-borne viral encephalitis. It is a non-billable category code — use a more specific child code such as A84.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
4
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

Includes

  • tick-borne viral meningoencephalitis

Frequently asked questions

What is ICD-10 code A84?
A84 is the ICD-10-CM code for "Tick-borne viral encephalitis". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A84 a billable code?
No — A84 is a non-billable header code. Use a more specific child code (such as A84.0) for billing.
What are the subcodes of A84?
A84 has 4 more specific child codes, including A84.0, A84.1, A84.8.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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