13 weeks gestation of pregnancy

This code indicates that a pregnant patient is precisely at 13 weeks of gestation. It is used to specify the duration of pregnancy, which is crucial for monitoring fetal development and maternal health throughout the first trimester.

This code is used when documenting the gestational age of a pregnancy, typically established by ultrasound or last menstrual period (LMP). It is appropriate for routine prenatal visits, initial obstetric evaluations, or when a specific gestational age needs to be recorded for clinical decision-making.

• Always confirm gestational age with physician documentation, prioritizing ultrasound measurements if available.
• Do not use this code if the gestational age is expressed in days or is not precisely 13 weeks.
• This code is often used in conjunction with other codes describing the reason for the encounter or any complications of pregnancy.