Mat care cnsl malf/damag fts, holoprosenceph, unsp

This code signifies maternal care provided when a fetus is suspected of having holoprosencephaly, a severe congenital brain malformation where the prosencephalon (the embryonic forebrain) fails to divide into two cerebral hemispheres. This diagnosis indicates the mother is receiving specialized monitoring and management due to this specific fetal CNS anomaly.

Use this code when the maternal record documents care for a pregnancy complicated by a fetal diagnosis or strong suspicion of holoprosencephaly. This applies to scenarios such as abnormal prenatal ultrasound findings, MRI results, or genetic testing indicating this specific condition. Documentation should clearly state the fetal diagnosis of holoprosencephaly.

• Always assign a secondary code from category Z3A to indicate the weeks of gestation.
• Ensure documentation specifies "holoprosencephaly" rather than a general CNS malformation to support this specific code.
• This code is for maternal care; do not use it for the fetal diagnosis itself once the infant is born.