Unsp viral infection with skin and mucous membrane lesions

This code represents a viral infection primarily manifesting with skin and/or mucous membrane lesions, where the specific viral etiology has not been identified or documented. It indicates a systemic viral process with dermatological or mucosal involvement without a definitive diagnosis of the causative virus.

Use this code when documentation clearly indicates a viral infection presenting with rashes, vesicles, ulcers, or other lesions on the skin or mucous membranes, but the specific virus (e.g., herpes simplex, varicella, measles) is not specified. This is appropriate when diagnostic testing for the viral agent is pending, inconclusive, or not performed.

• Avoid using this code if a more specific viral infection with skin/mucous membrane manifestations can be identified (e.g., B00.- for herpesviral infections).
• Always query the provider for a more definitive diagnosis if possible, especially if diagnostic test results are available.
• Consider sequencing this code as a principal diagnosis if it is the primary reason for the encounter, or as a secondary diagnosis if it's a co-morbidity.