B09

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B09

Billable

Unspecified viral infection characterized by skin and mucous membrane lesions

B09 is the ICD-10-CM code for Unspecified viral infection characterized by skin and mucous membrane lesions. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
A00-B99
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

What are viruses? Viruses are very tiny germs. They are made of genetic material (either DNA or RNA) inside of a protein coating. There are a huge number of viruses on earth. Only a small number of them can infect humans. Those viruses can infect our cells, which may cause disease. Some of the diseases that viruses can cause include the common cold , the flu , COVID-19 , and HIV . How are viruses spread? Viruses can…

Read more about Viral Infections at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • Viral enanthema NOS
  • Viral exanthema NOS

Frequently asked questions

What is ICD-10 code B09?
B09 is the ICD-10-CM code for "Unspecified viral infection characterized by skin and mucous membrane lesions". It falls under A00-B99 Certain infectious and parasitic diseases.
Is B09 a billable code?
Yes — B09 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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