B33

Non-billable

Other viral diseases, not elsewhere classified

B33 is the ICD-10-CM code for Other viral diseases, not elsewhere classified. It is a non-billable category code — use a more specific child code such as B33.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
6
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code B33?
B33 is the ICD-10-CM code for "Other viral diseases, not elsewhere classified". It falls under A00-B99 Certain infectious and parasitic diseases.
Is B33 a billable code?
No — B33 is a non-billable header code. Use a more specific child code (such as B33.0) for billing.
What are the subcodes of B33?
B33 has 6 more specific child codes, including B33.0, B33.1, B33.2.

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

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