2020 ICD-10-CM Diagnosis Code O01

Hydatidiform mole

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • O01 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM O01 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of O01 - other international versions of ICD-10 O01 may differ.
Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • code from category
    ICD-10-CM Diagnosis Code O08

    Complications following ectopic and molar pregnancy

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • This category is for use with categories O00-O02 to identify any associated complications
    O08
    to identify any associated complication.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as O01. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • chorioadenoma (destruens) (
    ICD-10-CM Diagnosis Code D39.2

    Neoplasm of uncertain behavior of placenta

      2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
    Applicable To
    • Chorioadenoma destruens
    • Invasive hydatidiform mole
    • Malignant hydatidiform mole
    Type 1 Excludes
    • hydatidiform mole NOS (O01.9)
    D39.2
    )
  • malignant hydatidiform mole (
    ICD-10-CM Diagnosis Code D39.2

    Neoplasm of uncertain behavior of placenta

      2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
    Applicable To
    • Chorioadenoma destruens
    • Invasive hydatidiform mole
    • Malignant hydatidiform mole
    Type 1 Excludes
    • hydatidiform mole NOS (O01.9)
    D39.2
    )
The following code(s) above O01 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to O01:
  • O00-O9A
    2020 ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    Note
    • CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
    • Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
    • Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
    • 1st trimester- less than 14 weeks 0 days
    • 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
    • 3rd trimester- 28 weeks 0 days until delivery
    Type 1 Excludes
    • supervision of normal pregnancy (Z34.-)
    Type 2 Excludes
    • mental and behavioral disorders associated with the puerperium (F53.-)
    • obstetrical tetanus (A34)
    • postpartum necrosis of pituitary gland (E23.0)
    • puerperal osteomalacia (M83.0)
    Use Additional
    • code from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
    Pregnancy, childbirth and the puerperium
  • O00-O08
    2020 ICD-10-CM Range O00-O08

    Pregnancy with abortive outcome

    Type 1 Excludes
    • continuing pregnancy in multiple gestation after abortion of one fetus or more (O31.1-, O31.3-)
    Pregnancy with abortive outcome
Clinical Information
  • A gestational disorder characterized by an abnormal placenta with marked enlargement of the chorionic villi and hyperplasia of the villous trophoblastic cells. According to the amount of villous involvement, a hydatidiform mole is defined as complete or partial. Most molar pregnancies are complete and are characterized by generalized hydropic villous changes. Partial moles are characterized by a mixture of large hydropic villi and normal placenta tissue. Complete moles are usually diploid and typically present between the eleventh and twenty-fifth week of pregnancy, whereas partial moles are usually triploid and usually present around the nineteenth week of pregnancy. The incidence of choriocarcinoma is higher in patients with complete hydatidiform mole. When a hydatidiform mole invades the myometrium and broad ligament, or it is found in distant sites as vagina, vulva, and lung, it is referred as invasive mole.
  • A slow-growing tumor that develops from trophoblastic cells (cells that help an embryo attach to the uterus and help form the placenta) after fertilization of an egg by a sperm. A hydatidiform mole contains many cysts (sacs of fluid). It is usually benign (not cancer) but it may spread to nearby tissues (invasive mole). It may also become a malignant tumor called choriocarcinoma. Hydatidiform mole is the most common type of gestational trophoblastic tumor.
  • 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.
  • Trophoblastic hyperplasia associated with normal gestation, or molar pregnancy; 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 History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to O01:
  • Type 1 Excludes: O02.1
    , O02.8
    ICD-10-CM Diagnosis Code O02.1

    Missed abortion

      2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
    Applicable To
    • Early fetal death, before completion of 20 weeks of gestation, with retention of dead fetus
    Type 1 Excludes
    • failed induced abortion (O07.-)
    • fetal death (intrauterine) (late) (O36.4)
    • missed abortion with blighted ovum (O02.0)
    • missed abortion with hydatidiform mole (O01.-)
    • missed abortion with nonhydatidiform (O02.0)
    • missed abortion with other abnormal products of conception (O02.8-)
    • missed delivery (O36.4)
    • stillbirth (P95)
    ICD-10-CM Diagnosis Code O02.8

    Other specified abnormal products of conception

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • abnormal products of conception with blighted ovum (O02.0)
    • abnormal products of conception with hydatidiform mole (O01.-)
    • abnormal products of conception with nonhydatidiform mole (O02.0)
ICD-10-CM Codes Adjacent To O01
O00.21 Ovarian pregnancy with intrauterine pregnancy
O00.211 Right ovarian pregnancy with intrauterine pregnancy
O00.212 Left ovarian pregnancy with intrauterine pregnancy
O00.219 Unspecified ovarian pregnancy with intrauterine pregnancy
O00.8 Other ectopic pregnancy
O00.80 …… without intrauterine pregnancy
O00.81 …… with intrauterine pregnancy
O00.9 Ectopic pregnancy, unspecified
O00.90 Unspecified ectopic pregnancy without intrauterine pregnancy
O00.91 Unspecified ectopic pregnancy with intrauterine pregnancy
O01 Hydatidiform mole
O01.0 Classical hydatidiform mole
O01.1 Incomplete and partial hydatidiform mole
O01.9 Hydatidiform mole, unspecified
O02 Other abnormal products of conception
O02.0 Blighted ovum and nonhydatidiform mole
O02.1 Missed abortion
O02.8 Other specified abnormal products of conception
O02.81 Inappropriate change in quantitative human chorionic gonadotropin (hCG) in early pregnancy
O02.89 Other abnormal products of conception
O02.9 Abnormal product of conception, unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.