- Codes Description
- O36.831
Maternal care for abnormalities of the fetal heart rate or rhythm, first trimester
- O36.832
Maternal care for abnormalities of the fetal heart rate or rhythm, second trimester
- O36.833
Maternal care for abnormalities of the fetal heart rate or rhythm, third trimester
- O36.839
Maternal care for abnormalities of the fetal heart rate or rhythm, unspecified trimester