ICD-10 Code A60.1 – Herpesviral infection of perianal skin and rectum (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A60.1 – Herpesviral infection of perianal skin and rectum
What it is
A60.1 identifies herpes simplex infection affecting the perianal skin and rectum. Use it when documentation specifies herpesviral disease in this anatomic area, not a nonspecific genital herpes diagnosis.
Clinical signs
Typical findings include painful perianal lesions, ulceration, or vesicles, and rectal involvement may cause proctitis symptoms. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents herpes infection of the perianal skin, rectum, or both. It also fits confirmed herpesviral proctitis or perianal herpes when the site is clearly stated. If the record only says “genital herpes,” check documentation for the exact location before coding.
Do not use for
Do not use A60.1 for oral herpes, unspecified anogenital herpes, or nonherpetic perianal conditions. Check documentation if the record does not clearly identify perianal or rectal involvement.
Coding tip
Code the documented site exactly; anatomic specificity drives selection of A60.1.