B00.9 Herpesviral infection, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Herpes simplex infection NOS

Applies from B00 Herpesviral [herpes simplex] infections

Excludes1 (never code together)

• congenital herpesviral infections (P35.2)

Excludes2 (not included here)

• anogenital herpesviral infection (A60.-)
• gammaherpesviral mononucleosis (B27.0-)
• herpangina (B08.5)

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 054.8 Herpes simplex with unspecified complication (approximate)
• 054.9 Herpes simplex without mention of complication (approximate)

Code annotations containing back-references to B00.9

Back-references to B00.9

• Type 2 Excludes: B10 Other human herpesviruses ("herpes NOS (B00.9)")
• Type 1 Excludes: B34 Viral infection of unspecified site ("herpesvirus [herpes simplex] infection NOS (B00.9)")

Back-references to B00

• Type 2 Excludes: B10 Other human herpesviruses ("herpes simplex (B00.-)")
• Type 2 Excludes: B10 Other human herpesviruses ("human herpesvirus NOS (B00.-)")
• Type 2 Excludes: B10 Other human herpesviruses ("human herpesvirus 1 and 2 (B00.-)")
• Code Also: D81.82 Activated Phosphoinositide 3-kinase Delta Syndrome [APDS] ("herpes virus infections (B00.-)")
• Code First: H67 Otitis media in diseases classified elsewhere ("viral disease NEC (B00-B34)")

Diagnosis Index entries for B00.9

• Herpes, herpesvirus, herpetic
• Herpes, herpesvirus, herpetic › human
• Herpes, herpesvirus, herpetic › simplex

Nearby codes

• B00.7 Disseminated herpesviral disease
• B00.8 Other forms of herpesviral infections
• B00.81 Herpesviral hepatitis
• B00.82 Herpes simplex myelitis
• B00.89 Other herpesviral infection
• B00.9 Herpesviral infection, unspecified (this code)