Congenital toxoplasmosis

This code represents an infection with the parasite Toxoplasma gondii acquired by a fetus during gestation from an infected mother. Congenital toxoplasmosis can lead to a range of severe health problems in the newborn, including neurological damage, ocular lesions, and systemic involvement. The severity of the manifestations depends on the timing of maternal infection during pregnancy.

Use this code when documentation confirms a diagnosis of toxoplasmosis acquired by the infant in utero. This typically involves positive serological tests (IgM, IgA, or persistent IgG) in the neonate, detection of the parasite, or characteristic clinical findings consistent with congenital infection. Documentation should clearly state the congenital nature of the infection.

• Differentiate from acquired toxoplasmosis in an infant, which would be coded differently.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter.
• Look for documentation of specific manifestations (e.g., hydrocephalus, chorioretinitis) to code additional conditions.