2026 ICD-10-CM Diagnosis Code O01Hydatidiform mole
O01 is a non-billable ICD-10-CM category code for hydatidiform mole, so it cannot be submitted on claims. Use a more specific code from this category instead, such as O01.0, O01.1, and O01.9.
Code Identity
Code Classification
Specific Coding for Hydatidiform moleOverview
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Use Additional Code
- code from category O08
Type 1 Excludes
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Clinical InformationClinical
Hydatidiform Mole
trophoblastic hyperplasia associated with normal gestation, or molar pregnancy. it is characterized by the swelling of the chorionic villi and elevated human chorionic gonadotropin. hydatidiform moles or molar pregnancy may be categorized as complete or partial based on their gross morphology, histopathology, and karyotype.Hydatidiform Mole, Invasive
a uterine tumor derived from persistent gestational trophoblasts, most likely after a molar pregnancy (hydatidiform mole). invasive hyadatiform mole develops in about 15% of patients after evacuation of a complete mole and less frequently after other types of gestation. it may perforate the myometrium and erode uterine vessels causing hemorrhage.
Patient EducationClinical
Tumors and Pregnancy
Tumors during pregnancy are rare, but they can happen. Tumors can be either benign (not cancer) or malignant (cancer). The most common cancers in pregnancy include breast cancer, thyroid cancer, cervical cancer, lymphoma, and melanoma. Cancer itself rarely harms the fetus, and some cancer treatments are safe during pregnancy.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
