Suprvsn of preg w history of pre-term labor, first trimester

This code signifies the medical oversight of a pregnancy during the first trimester for a patient who has a documented history of preterm labor in a previous pregnancy. It indicates that the current pregnancy is being managed with heightened awareness and interventions due to this significant risk factor. The supervision aims to prevent recurrence of preterm labor.

Use this code when a pregnant patient in her first trimester presents for routine or specialized prenatal care, and her medical history clearly indicates a prior preterm delivery or documented preterm labor. Documentation should explicitly state "history of preterm labor" and confirm the current gestational age within the first trimester.

• Ensure the patient is definitively in the first trimester (up to 13 weeks 6 days gestation).
• Do not use this code if the history is of a full-term delivery or if preterm labor was ruled out in a prior pregnancy.
• Always sequence this code as a secondary diagnosis following the primary code for the current pregnancy (e.g., Z34.xx for routine prenatal care).