Mat care cnsl malf/damag fts, anencephaly, fetus 5

This code signifies maternal care provided due to a suspected or confirmed diagnosis of anencephaly in a fetus, specifically when it is the fifth fetus in a multiple gestation pregnancy. Anencephaly is a severe congenital neural tube defect characterized by the absence of a major portion of the brain, skull, and scalp.

Use this code when the mother is receiving antenatal care for a pregnancy where anencephaly has been identified or is strongly suspected in one of the fetuses, and that affected fetus is designated as fetus 5. Documentation should clearly indicate the diagnosis of anencephaly, the maternal care being provided, and the specific fetal number in a multifetal gestation.

• Ensure the documentation explicitly identifies the affected fetus as "fetus 5" in a multiple gestation.
• Do not use this code for other types of central nervous system malformations; a more specific code from O35.0- series should be chosen.
• Always sequence this code as a secondary diagnosis following the primary code for the maternal condition or reason for the encounter.