Billable / Specific Code
ICD-10-CM B09 is the diagnosis code for Unspecified viral infection characterized by skin and mucous membrane lesions. This code falls under the section "Viral infections characterized by skin and mucous membrane lesions" within Chapter 1 — Certain infectious and parasitic diseases (A00-B99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where B09 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, B09 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
B09 is the ICD-10-CM diagnosis code for "Unspecified viral infection characterized by skin and mucous membrane lesions". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
B09 is located in Section B00-B09 — "Viral infections characterized by skin and mucous membrane lesions" within Chapter 1 of the ICD-10-CM Tabular List.
Use B09 when the patients documented diagnosis matches "Unspecified viral infection characterized by skin and mucous membrane lesions" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Unspecified viral infection characterized by skin and mucous membrane lesions is B09.
Yes, B09 can be used as a primary diagnosis code since it is billable and specific.
B09 is in Chapter 1 of the ICD-10-CM Tabular List.
Yes, B09 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.