Mat care cnsl malf/damag fts, agenesis corpus callosum, fts1

This code signifies maternal care provided due to a suspected or confirmed agenesis of the corpus callosum in a fetus. Agenesis of the corpus callosum is a congenital brain malformation where the structure connecting the two cerebral hemispheres is partially or completely absent. This code specifically applies when the mother is pregnant with her first fetus.

Use this code when the mother is receiving antenatal care for a fetus diagnosed with or suspected of having agenesis of the corpus callosum. Documentation should clearly indicate the fetal diagnosis (e.g., from ultrasound, MRI) and confirm that this is the first fetus in the current pregnancy. This code is appropriate for ongoing monitoring, counseling, and management related to this fetal condition.

• Ensure documentation specifies "fetus 1" to justify the final character. If not specified, query the provider.
• Do not confuse with other fetal central nervous system malformations; this code is specific to agenesis of the corpus callosum.
• Always sequence this code as a secondary diagnosis, following the code for the primary reason for the encounter (e.g., routine antenatal care Z34.xx).