B09
ICD-10BillableUnsp viral infection with skin and mucous membrane lesions
Official ICD-10-CM descriptor (FY2026)
Unspecified viral infection characterized by skin and mucous membrane lesions
B09 is valid for submission on a claim: CMS flags it as a billable, specific code.
Inclusion terms
- Viral enanthema NOS
- Viral exanthema NOS
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.