The ICD-10-CM code block B00–B09 covers viral infections that present with characteristic skin and mucous membrane lesions, including herpes viral infections, varicella (chickenpox), zoster (shingles), viral warts, and other viral diseases. These conditions are common in outpatient, dermatology, pediatrics, family medicine, and infectious disease practices—and require accurate code selection to ensure proper documentation, billing, and […]