In simple words: This code indicates care for a pregnant woman due to a birth defect affecting the shape or structure of her uterus.

This code is used for maternal care related to a congenital malformation of the uterus.It encompasses scenarios where the malformation is the primary reason for hospitalization, other obstetric care, or cesarean delivery before labor onset. Specific malformations include double uterus (uterus didelphys) and bicornuate uterus (uterus bicornis).Any associated obstructed labor should be coded separately (O65.5), and an additional code should be used to specify the type of congenital malformation.

Example 1: A pregnant woman with a known bicornuate uterus is receiving prenatal care due to the increased risk of preterm labor and malpresentation., A pregnant woman with a double uterus requires cesarean delivery due to the abnormal uterine anatomy., A pregnant woman with a septate uterus is hospitalized for observation and monitoring due to concerns about fetal growth restriction.

Documentation should include the type of congenital uterine malformation, the trimester of pregnancy, any associated complications (e.g., preterm labor, malpresentation, fetal growth restriction), and the plan of care.Imaging studies (e.g., ultrasound, MRI) confirming the diagnosis should be available.

** For more specific coding related to the trimester of pregnancy, use O34.00-O34.03. Use additional codes to specify the type of uterine malformation, such as Q51.0 for uterus didelphys, Q51.3 for uterus bicornis bicollis, or Q51.4 for uterus bicornis unicollis.