Mat care cnsl malf/damag fts, holoprosenceph, fetus 4

This code signifies maternal care provided due to a suspected or confirmed diagnosis of holoprosencephaly in a fetus. Holoprosencephaly is a severe congenital brain malformation characterized by the failure of the prosencephalon (the embryonic forebrain) to properly divide into two cerebral hemispheres. This specific code indicates that the diagnosis pertains to the fourth fetus in a multiple gestation pregnancy.

Use this code when a pregnant patient receives medical attention because her fetus (specifically the fourth fetus in a multifetal pregnancy) has been diagnosed with or is suspected of having holoprosencephaly. Documentation should clearly indicate the maternal care provided, the fetal diagnosis of holoprosencephaly, and the fetal number in a multiple gestation.

• Always confirm the specific type of central nervous system malformation (holoprosencephaly) and the fetal number in multiple gestations.
• Do not confuse with other CNS malformations; ensure documentation explicitly states holoprosencephaly.
• Sequence this code as a secondary diagnosis following the appropriate Z3A code for weeks of gestation.