Classical hydatidiform mole

This code represents a complete hydatidiform mole, a rare abnormal pregnancy characterized by the proliferation of placental tissue with no fetal development. The chorionic villi are swollen and edematous, resembling a cluster of grapes, and there is no identifiable embryo or fetus.

Apply this code when documentation clearly indicates a diagnosis of a classical or complete hydatidiform mole based on pathology reports or ultrasound findings. This typically occurs after a miscarriage or D&C where molar tissue is identified.

• Differentiate from partial hydatidiform mole (O01.1) or other abnormal products of conception.
• Ensure pathology reports explicitly state "classical" or "complete" hydatidiform mole.
• Consider sequencing with codes for complications such as hemorrhage or hyperemesis gravidarum if present.