Matern care for abnlt fetl hrt rate or rhym, 2nd tri, fts4

This code signifies ongoing medical supervision and management provided to a pregnant patient in her second trimester due to an identified abnormality in the heart rate or rhythm of the fourth fetus in a multiple gestation pregnancy. This includes conditions such as fetal bradycardia, tachycardia, arrhythmias, or other irregular heart patterns requiring intervention or close monitoring.

Apply this code when documentation indicates maternal care for a diagnosed fetal cardiac rhythm abnormality specifically affecting the fourth fetus during the second trimester (weeks 14 through 27+6 days). Supporting documentation should include details of the fetal heart rate abnormality, the gestational age, and the specific fetus affected in a multifetal pregnancy.

• Ensure the documentation clearly specifies "fetus 4" in a multiple gestation and that the care occurred during the second trimester.
• Do not use this code for abnormalities of fetal heart rate or rhythm occurring in the first or third trimesters, or for a different fetus number.
• This code is for maternal care; a separate code may be needed for the specific fetal condition if documented.