B00.4

Billable

Herpesviral encephalitis

B00.4 is the ICD-10-CM code for Herpesviral encephalitis. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
A00-B99
Parent
B00
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

Includes

  • Herpesviral meningoencephalitis
  • Simian B disease

Excludes1 — not coded here

  • herpesviral encephalitis due to herpesvirus 6 and 7 (B10.01, B10.09)
  • non-simplex herpesviral encephalitis (B10.0-)

Frequently asked questions

What is ICD-10 code B00.4?
B00.4 is the ICD-10-CM code for "Herpesviral encephalitis". It falls under A00-B99 Certain infectious and parasitic diseases.
Is B00.4 a billable code?
Yes — B00.4 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from B00.4?
Excludes1 (not coded here): herpesviral encephalitis due to herpesvirus 6 and 7 (B10.01, B10.09); non-simplex herpesviral encephalitis (B10.0-).

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

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