In simple words: This code indicates that the pregnancy has gone past the usual due date.

This code represents a pregnancy that has extended beyond the typical gestational period.A prolonged pregnancy is generally defined as one lasting more than 42 weeks (294 days) from the first day of the last menstrual period, or a birth with a gestational age of 41 weeks or more.

Example 1: A pregnant woman reaches 42 weeks and 1 day of gestation.The physician documents a post-term pregnancy (O48.0)., A woman delivers a baby at 41 weeks and 3 days of gestation.The prolonged pregnancy (O48.1) is documented., A patient is seen at 40 weeks and 5 days for routine prenatal care. Because delivery has not occurred, but the timeframe is not yet considered post-term the code O48 Late pregnancy is applied, as she is in the late pregnancy stage.

Documentation should include the date of the last menstrual period (LMP), ultrasound findings regarding gestational age, and any complications or interventions related to the prolonged pregnancy.

** Excludes1: supervision of normal pregnancy (Z34.-)Excludes2: mental and behavioral disorders associated with the puerperium (F53.-)obstetrical tetanus (A34)postpartum necrosis of pituitary gland (E23.0)puerperal osteomalacia (M83.0)