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B01.1

Non-billable

Varicella encephalitis, myelitis and encephalomyelitis

B01.1 is the ICD-10-CM code for Varicella encephalitis, myelitis and encephalomyelitis. It is a non-billable category code — use a more specific child code such as B01.11 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Parent
B01
Subcodes
2
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

Includes

  • •Postchickenpox encephalitis, myelitis and encephalomyelitis

Frequently asked questions

What is ICD-10 code B01.1?
B01.1 is the ICD-10-CM code for "Varicella encephalitis, myelitis and encephalomyelitis". It falls under A00-B99 Certain infectious and parasitic diseases.
Is B01.1 a billable code?
No — B01.1 is a non-billable header code. Use a more specific child code (such as B01.11) for billing.
What are the subcodes of B01.1?
B01.1 has 2 more specific child codes, including B01.11, B01.12.

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

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