In simple words: This code describes a newborn baby with a viral infection that was acquired before or during birth, other than the more common ones like rubella, cytomegalovirus, herpes, hepatitis, or Zika virus.

Other congenital viral diseases, including congenital varicella (chickenpox).

Example 1: A newborn is diagnosed with congenital varicella (chickenpox) after the mother developed chickenpox shortly before delivery., A baby is born with signs of a viral infection, but tests for common congenital viral infections (rubella, CMV, herpes, etc.) are negative. After further investigation, a less common virus is identified, and the code P35.8 is used., An infant presents with symptoms consistent with a congenital viral infection shortly after birth.Testing reveals the presence of a rare viral infection, not otherwise specified in the ICD-10-CM.

Documentation should include evidence of the viral infection present in the newborn, timing of maternal infection if applicable, and any diagnostic testing performed.