In simple words: This code is used when a pregnant woman, who has been pregnant before, visits a doctor or other healthcare provider for a routine checkup during the first three months of her pregnancy.

This code is used for encounters with a healthcare professional for the supervision of a normal pregnancy, not the first pregnancy, during the first trimester (up to 14 weeks).

Example 1: A woman who is 10 weeks pregnant with her second child has a routine prenatal checkup with her obstetrician. The pregnancy is progressing normally. The code Z34.81 is used., A woman who is 12 weeks pregnant with her third child presents to her family doctor with a mild cold. The pregnancy is otherwise uncomplicated. Both the cold and the routine pregnancy supervision are addressed during the encounter. The code Z34.81 is used, along with the appropriate code for the common cold., A woman who is 8 weeks pregnant with her second child has an ultrasound to confirm the pregnancy and assess fetal development. The ultrasound reveals a normal pregnancy. The code Z34.81 is used, along with the appropriate code for the ultrasound.

Documentation should include details of the pregnancy, such as the last menstrual period and estimated due date. Any relevant findings from the physical exam, such as fetal heart tones, uterine size, and maternal vital signs, should also be documented. The patient's obstetric history, including previous pregnancies and deliveries, should be noted. Any discussions of prenatal care, education, or counseling should also be documented.