Less than 8 weeks gestation of pregnancy

This code indicates a pregnancy that is in its very early stages, specifically before the completion of the eighth week of gestation. This period is often calculated from the first day of the last menstrual period (LMP) or confirmed by early ultrasound measurements.

This code is appropriate for documenting the gestational age in initial prenatal visits, early pregnancy complications such as threatened abortion, or when performing procedures related to early pregnancy. It is used when the exact gestational age is known to be less than 8 weeks.

• Always use in conjunction with a code from category O09 (Supervision of high-risk pregnancy) or Z3A (Weeks of gestation) to specify the pregnancy status.
• Ensure documentation clearly states the gestational age as less than 8 weeks, often expressed as 0-7 weeks and 6 days.
• Do not use if the gestational age is unknown or if it is 8 weeks or greater; refer to other Z3A codes for those scenarios.