ICD-10 Code B08.04 – Paravaccinia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B08.04 – Paravaccinia, unspecified
What it is
B08.04 identifies paravaccinia when the specific type or site is not documented. Use it for a parapoxvirus infection commonly linked to contact with infected animals or contaminated materials.
Clinical signs
Typical findings include a localized skin lesion that may be papular, nodular, or crusted, often on the hands or fingers after exposure. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record states paravaccinia or parapoxvirus infection but does not specify a more detailed form. It also fits when the provider documents an unspecified lesion after relevant animal exposure and confirms paravaccinia. Check documentation for the exact diagnosis.
Do not use for
Do not use B08.04 for vaccinia, cowpox, or other confirmed viral skin infections with a different diagnosis. If the chart identifies a more specific parapoxvirus condition, code that instead.
Coding tip
Assign the unspecified code only when the provider’s documentation lacks a more precise paravaccinia term.