In simple words: This code signifies a herpes infection that isn't a cold sore, genital herpes, or some other specific herpes infection. Examples include a herpes infection of the finger (whitlow) or esophagus (the tube connecting the mouth and stomach).

This ICD-10-CM code represents any herpesviral infection not specifically classified elsewhere. It encompasses conditions like herpetic whitlow (a herpes infection of the fingers or thumbs) and HSV esophagitis (herpes simplex virus infection of the esophagus). It excludes congenital herpesviral infections (P35.2), anogenital herpesviral infection (A60.-), gammaherpesviral mononucleosis (B27.0-), and herpangina (B08.5).

Example 1: A patient presents with painful, blistering lesions on their finger, diagnosed as herpetic whitlow. B00.89 is used., An immunocompromised patient experiences difficulty swallowing and is diagnosed with HSV esophagitis via endoscopy and biopsy. B00.89 is applied., A patient with a history of herpes simplex presents with lesions in an atypical location, not fitting other herpesviral infection categories. B00.89 is appropriate.

Documentation should include the type and location of the lesion, diagnostic methods used (e.g., physical exam, viral culture, PCR), and any associated symptoms.

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