Herpetic whitlow

This code represents a viral infection of the finger or toe, typically caused by the herpes simplex virus (HSV). It manifests as painful, fluid-filled blisters or vesicles, often accompanied by erythema and edema, primarily affecting the distal phalanx.

Apply this code when documentation clearly indicates a diagnosis of herpetic whitlow, often seen in healthcare workers or children with oral HSV infections who suck their thumbs. Supporting documentation should describe the characteristic vesicular lesions on the digits and may include a history of HSV exposure.

• Differentiate from bacterial paronychia or other dermatological conditions affecting the digits.
• Ensure documentation specifies "herpetic" to distinguish from other forms of whitlow.
• Consider an additional code for the primary HSV infection if documented and still active.