Diagnosis Code for HSV Screening
For an asymptomatic patient requesting HSV screening without symptoms or known exposure, use ICD-10-CM code Z11.4 (Encounter for screening for human immunodeficiency virus [HIV]) or Z11.59 (Encounter for screening for other viral diseases), as there is no specific HSV screening code in ICD-10-CM.
Understanding the Coding Context
The evidence provided focuses primarily on diagnostic codes for active HSV infection, not screening in asymptomatic individuals. The guidelines reference ICD-10 codes for anogenital herpes infection 1:
- A60: Anogenital herpesviral [herpes simplex] infection
- A60.0: Herpesviral infection of genitalia and urogenital tract
- A60.1: Herpesviral infection of perianal skin and rectum
- A60.9: Anogenital herpesviral infection, unspecified
However, these codes are inappropriate for screening because they indicate active infection, not a screening encounter.
Important Clinical Considerations
Guidelines explicitly discourage widespread HSV screening 1. The 2010 guidelines recommend type-specific serology only for:
- Asymptomatic individuals in specific high-risk groups
- Pregnant women at risk of acquiring HSV near delivery
- Men who have sex with men
- HIV-positive individuals
The USPSTF explicitly recommends against screening asymptomatic women for HSV 2, noting that while screening can identify infected individuals, there is no evidence that treating asymptomatic patients improves long-term health outcomes.
Appropriate Screening Codes
For the rare situations where HSV screening is clinically indicated:
- Z11.59: Encounter for screening for other viral diseases (most appropriate)
- Z20.828: Contact with and (suspected) exposure to other viral communicable diseases (if there's known partner exposure)
- Z72.51 or Z72.52: High-risk sexual behavior codes (if applicable to justify screening)
Critical Pitfalls to Avoid
- Never use A60.x codes for screening - these indicate confirmed infection and will affect the patient's medical record permanently
- Understand the implications - HSV serologic testing has lifelong consequences and significant psychosocial impact 3, 4
- Counsel patients appropriately before testing about the limited clinical utility of screening in asymptomatic individuals without specific risk factors
- Document the clinical rationale for screening to support medical necessity, as most insurance will not cover routine HSV screening
The lack of a specific HSV screening code in ICD-10-CM reflects the medical consensus that routine screening is not recommended for the general asymptomatic population.