Suprvsn of preg w history of infertility, third trimester

This code signifies the ongoing obstetric care for a pregnant patient who has a documented history of infertility, now in her third trimester. It indicates that the pregnancy itself is being managed with an awareness of the patient's past reproductive challenges.

Apply this code when a pregnant patient with a confirmed history of infertility (e.g., requiring fertility treatments, prolonged attempts to conceive) is receiving routine or specialized prenatal care during her third trimester. Documentation should clearly state the history of infertility and the current gestational stage.

• Always sequence this code as a secondary diagnosis following the primary code for the current pregnancy (e.g., Z3A.xx for gestational age).
• Ensure documentation specifies "history of infertility" and not just "difficulty conceiving" without further context.
• Do not use this code if the infertility is an active, current condition being treated during the pregnancy; instead, consider codes for complications of pregnancy.