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

This code signifies the ongoing medical oversight of a pregnant patient who has a documented history of preterm labor in a previous pregnancy. It indicates that the current pregnancy is being monitored more closely due to this elevated risk factor, regardless of the current gestational stage. The focus is on preventive measures and early detection of potential complications.

Use this code when a pregnant patient presents for routine or specialized prenatal care and their medical history clearly indicates a prior preterm delivery or documented preterm labor. Documentation should explicitly state "history of preterm labor" or "previous preterm birth" as a risk factor influencing current pregnancy management. This code is appropriate throughout all trimesters of the current pregnancy.

• Do not use this code if the patient is currently experiencing preterm labor; instead, use codes from category O60.
• Ensure the medical record clearly distinguishes between a history of preterm labor and current preterm labor.
• This code requires an additional code for the current pregnancy status (e.g., Z3A.xx for weeks of gestation).