2025 ICD-10-CM code O01.0
(Active) Effective Date: N/A Revision Date: N/A Obstetrics - Pregnancy with abortive outcome Chapter 15: Pregnancy, childbirth and the puerperium (O00-O9A) Feed
Classical hydatidiform mole, also known as a complete hydatidiform mole, is a type of molar pregnancy characterized by abnormal fertilization and trophoblastic proliferation.
Medical necessity is established by the presence of clinical findings consistent with a hydatidiform mole, requiring evacuation of the molar tissue to prevent potential complications. Continued monitoring is necessary to detect and treat any potential malignant transformation.
Obstetrician-gynecologist manages the diagnosis and treatment, including counseling, performing procedures (such as DC), and follow-up monitoring for gestational trophoblastic neoplasia (GTN).
- Chapter 15: Pregnancy, childbirth and the puerperium (O00-O9A)
- Pregnancy, childbirth and the puerperium > Pregnancy with abortive outcome
In simple words: A classical hydatidiform mole, also called a complete molar pregnancy, is an unusual pregnancy where the fertilized egg doesn't develop normally. Instead of a baby, abnormal tissue develops in the womb, looking like bunches of grapes. It's usually diagnosed early, and doctors remove the abnormal tissue. After removal, a woman needs close monitoring.
O01.0, Classical hydatidiform mole (complete hydatidiform mole), is a benign gestational trophoblastic disease occurring during pregnancy.It involves abnormal fertilization, resulting in trophoblastic proliferation with absent or abnormal embryonic development.The condition is characterized by the absence of fetal tissue and the presence of abnormal placental tissue, forming grape-like vesicles.Diagnosis is typically made via ultrasound and confirmed through histopathological examination of tissue obtained after evacuation of the mole.Treatment typically involves dilation and curettage (DC) to remove the molar tissue.Close monitoring for gestational trophoblastic neoplasia (GTN) is essential after treatment. This code is used only on maternal records.
Example 1: A 30-year-old woman presents with vaginal bleeding and elevated beta-hCG levels.Ultrasound reveals a uterus consistent with a complete hydatidiform mole.A DC is performed to remove the molar tissue.O01.0 is coded., A 25-year-old woman experiences early pregnancy loss with significant vaginal bleeding.Ultrasound confirms a complete hydatidiform mole.After evacuation of the molar tissue, she undergoes serial beta-hCG monitoring. O01.0 is coded., A 40-year-old woman undergoes diagnostic testing due to abnormal uterine bleeding and elevated beta-hCG levels.Pathology confirms the diagnosis of a classical hydatidiform mole after DC. O01.0 is coded.
* Positive pregnancy test.* Ultrasound findings showing characteristic features of a hydatidiform mole (e.g., absence of fetal parts, presence of multiple cystic structures).* Histopathological examination of the tissue removed during the DC confirming the diagnosis.* Beta-hCG levels before and after treatment.* Documentation of follow-up care for GTN surveillance.
** The patient's age range is typically between 12 and 55 years old.This code is only for the classical type of hydatidiform mole.Other types of molar pregnancies have different codes.
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- Specialties:Obstetrics and Gynecology
- Place of Service:Inpatient Hospital, Outpatient Hospital, Office