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

This code signifies ongoing medical supervision and management provided to a pregnant patient during her second trimester due to an identified abnormal heart rate or rhythm in one of her fetuses, when the pregnancy involves multiple gestations and the specific fetus is not otherwise specified. This includes monitoring, diagnostic testing, and potential interventions aimed at addressing the fetal cardiac anomaly.

Use this code when documentation indicates maternal care for an abnormal fetal heart rate or rhythm (e.g., bradycardia, tachycardia, arrhythmia) in the second trimester of a multiple gestation pregnancy, and the specific fetus experiencing the abnormality is not individually identified. This code requires clear documentation of the fetal cardiac abnormality and the trimester of care.

• Ensure documentation specifies "second trimester" and "multiple gestation" with an unspecified fetus affected.
• Do not use this code if the specific fetus (e.g., fetus 1, fetus 2) is identified; instead, use the appropriate O36.832- code with the specific fetus indicator.
• Sequence this code as a secondary diagnosis following the primary obstetric code indicating the reason for the encounter.