Abnormality in fetal heart rate and rhythm complicating labor and delivery

**Inclusion terms:** - Depressed fetal heart rate tones complicating labor and delivery - Fetal bradycardia complicating labor and delivery - Fetal heart rate decelerations complicating labor and delivery - Fetal heart rate irregularity complicating labor and delivery - Fetal heart rate abnormal variability complicating labor and delivery - Fetal tachycardia complicating labor and delivery - Non-reassuring fetal heart rate or rhythm complicating labor and delivery

**Excludes1:** - fetal stress NOS (O77.9) - labor and delivery complicated by electrocardiographic evidence of fetal stress (O77.8) - labor and delivery complicated by ultrasonic evidence of fetal stress (O77.8)

**Excludes2:** - fetal metabolic acidemia (O68) - other fetal stress (O77.0-O77.1)