40 weeks gestation of pregnancy

This code indicates that a pregnancy has reached a gestational age of exactly 40 weeks. It signifies a full-term pregnancy, typically marking the expected due date and the completion of the normal gestational period.

This code is used when documenting a patient's gestational age at 40 weeks, often in the context of prenatal care, labor and delivery admissions, or postpartum follow-up. It is appropriate for both singleton and multiple gestations when the gestational age is precisely 40 weeks.

• Always confirm gestational age documentation from the physician or clinical records.
• Do not use this code if the gestational age is documented as "40 weeks and X days" or "39 weeks and X days"; use the more specific code for that week.
• This code is typically a secondary diagnosis, accompanying codes for the pregnancy itself (e.g., O80, O09.-).