Matern care for abnlt fetl hrt rate or rhym, 1st tri, fts3

This code signifies ongoing medical supervision and intervention provided to a pregnant patient during her first trimester due to an identified abnormal heart rate or rhythm in the third fetus of a multiple gestation pregnancy. This includes monitoring, diagnostic workup, and management strategies aimed at addressing the fetal cardiac anomaly.

Apply this code when documentation indicates maternal care for an abnormal fetal heart rate (e.g., bradycardia, tachycardia, arrhythmia) specifically affecting the third fetus, identified during the first trimester of pregnancy. Supporting documentation includes ultrasound reports, fetal monitoring strips, and physician notes detailing the abnormal finding and the trimester of diagnosis.

• Ensure the documentation clearly specifies "fetus 3" in a multiple gestation and that the abnormality was identified in the first trimester.
• Do not confuse with codes for abnormalities of fetal growth or other fetal conditions; this code is specific to heart rate/rhythm.
• Sequence this code as a secondary diagnosis following the code for the primary reason for the encounter if the maternal care is not the sole focus.