ICD-10 B00
Non-Billable HeaderHerpesviral [herpes simplex] infections
About ICD-10-CM B00
ICD-10-CM code B00 represents Herpesviral [herpes simplex] infections. This is a non-billable header code in the Infectious and Parasitic Diseases chapter (block B00). The 2026 edition of ICD-10-CM B00 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with B00. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- congenital herpesviral infections (P35.2)
Type 2 Excludes
Not included here, the excluded code is not part of B00, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- anogenital herpesviral infection (A60.-)
- gammaherpesviral mononucleosis (B27.0-)
- herpangina (B08.5)
Medicare LCD Coverage for B00
Local Coverage Determinations (LCDs) from CMS MACs that list B00 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing B00.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but B00 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with B00
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To B00
Other codes in section B00-B09 (Viral infections characterized by skin and mucous membrane lesions).
ICD-10 B00, Billing FAQ
Is ICD-10 code B00 billable? +
No, B00 is a non-billable header code. Use a more specific child code from block B00 when submitting claims.
What codes are Type 1 Excludes for B00? +
Type 1 Excludes (never code together with B00): congenital herpesviral infections (P35.2)
What codes are Type 2 Excludes for B00? +
Type 2 Excludes (may be coded together when both conditions exist): anogenital herpesviral infection (A60.-); gammaherpesviral mononucleosis (B27.0-); herpangina (B08.5)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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