ICD-10 Code B08.4 – Enteroviral vesicular stomatitis with exanthem (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B08.4 – Enteroviral vesicular stomatitis with exanthem
What it is
B08.4 identifies an enteroviral infection that causes mouth sores and a vesicular skin rash with exanthem. Use it when documentation states enteroviral vesicular stomatitis with generalized rash.
Clinical signs
Typical findings include painful oral vesicles or ulcers and a concurrent rash with small blisters. Clinical features vary; refer to documentation for the specific enterovirus-related presentation.
When to use this code
Use this code when the provider documents enteroviral vesicular stomatitis with exanthem, or equivalent wording such as enteroviral mouth lesions with a vesicular rash. It fits confirmed or clearly documented enteroviral illness affecting the mouth and skin. Check documentation if the cause is not specified.
Do not use for
Do not use B08.4 for herpes simplex, varicella, or hand-foot-and-mouth disease unless the record specifically states this diagnosis. Avoid it when the rash is nonspecific and enteroviral stomatitis is not documented.
Coding tip
Code only when the chart links both the enteroviral stomatitis and exanthem; if either element is missing, verify the provider’s documentation.