Congenital cytomegalovirus infection

This code signifies an infection with cytomegalovirus (CMV) that was acquired by the fetus in utero or during birth. It can manifest with a wide range of symptoms, from asymptomatic to severe, affecting multiple organ systems such as the brain, liver, and hematopoietic system. The infection is present at birth and is not acquired postnatally.

Use this code when documentation confirms a diagnosis of cytomegalovirus infection present at birth, typically identified through laboratory testing (e.g., viral culture, PCR) from neonatal samples. This applies to both symptomatic and asymptomatic congenital CMV cases. Documentation should clearly state the congenital nature of the infection.

• Distinguish carefully from perinatal or postnatal CMV infections, which are coded differently.
• Always look for documentation of diagnostic testing confirming CMV and its congenital origin.
• Sequence this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity affecting care.