ICD-10-CM Code O01

Hydatidiform mole

Version 2020 Non-Billable Code

Not Valid for Submission

O01 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of hydatidiform mole. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:O01
Short Description:Hydatidiform mole
Long Description:Hydatidiform mole

Consider the following ICD-10 codes with a higher level of specificity:

  • O01.0 - Classical hydatidiform mole
  • O01.1 - Incomplete and partial hydatidiform mole
  • O01.9 - ... unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code O01:

Use Additional Code

Use Additional Code
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.
  • code from category O08

Type 1 Excludes

Type 1 Excludes
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.
  • chorioadenoma destruens D39.2
  • malignant hydatidiform mole D39.2

Clinical Information

  • 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.
  • 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.

Code Classification

  • Pregnancy, childbirth and the puerperium (O00–O99)
    • Pregnancy with abortive outcome (O00-O08)
      • Hydatidiform mole (O01)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Tumors and Pregnancy

Tumors during pregnancy are rare, but they can happen. Tumors can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. The most common cancers in pregnancy are breast cancer, cervical cancer, lymphoma, and melanoma. Cancer itself rarely harms the baby, and some cancer treatments are safe during pregnancy. You and your health care provider will work together to find the best treatment. Your options will depend on how far along the pregnancy is, as well as the type, size, and stage of your cancer.

Another type of tumor that women can get is called a gestational trophoblastic disease (GTD). It happens when a fertilized egg doesn't become a fetus. GTD is not always easy to find. It is usually benign, but some types can be malignant. The most common type of GTD is a molar pregnancy. In its early stages, it may look like a normal pregnancy. You should see your health care provider if you have vaginal bleeding (not menstrual bleeding).

Treatment depends on the type of tumor, whether it has spread to other places, and your overall health.


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