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

This code describes maternal care provided due to an abnormal fetal heart rate or rhythm detected during pregnancy, when the specific trimester of detection is not documented, and the abnormality is observed in the fourth fetus of a multiple gestation pregnancy. This encompasses conditions such as fetal bradycardia, tachycardia, or arrhythmias requiring maternal monitoring or intervention.

Apply this code when documentation indicates maternal management for an abnormal fetal heart rate or rhythm in a multiple gestation pregnancy involving four fetuses, and the specific trimester of diagnosis is not specified. This code is appropriate when the medical record clearly identifies the fourth fetus as the affected one.

• Ensure documentation specifies "fetus 4" to differentiate from other fetuses in a multiple gestation.
• If the trimester is known, use the more specific O36.831-, O36.832-, or O36.833- series.
• Code any underlying maternal conditions or fetal anomalies separately.