Incomplete and partial hydatidiform mole

This code represents a gestational trophoblastic disease characterized by abnormal placental development where some fetal tissue may be present, but the placenta is partially molar. It involves an abnormal fertilization event, typically with a triploid karyotype, leading to an enlarged, cystic placenta and an abnormal or absent fetus.

Use this code for documented cases of an incomplete or partial hydatidiform mole identified through ultrasound, pathology, or clinical presentation. This diagnosis is often made following a miscarriage or D&C for abnormal uterine bleeding in early pregnancy.

• Differentiate from a complete hydatidiform mole (O01.0) where no fetal tissue is present.
• Ensure pathology reports explicitly state "incomplete" or "partial" hydatidiform mole.
• Code any associated complications, such as hemorrhage or infection, separately.