2020 ICD-10-CM Diagnosis Code O01.0

Classical hydatidiform mole

    2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
  • O01.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM O01.0 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of O01.0 - other international versions of ICD-10 O01.0 may differ.
ICD-10-CM Coding Rules
  • O01.0 is applicable to maternity patients aged 12 - 55 years inclusive.
Applicable To
  • Complete hydatidiform mole
The following code(s) above O01.0 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 O01.0:
  • 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
  • O01
    ICD-10-CM Diagnosis Code O01

    Hydatidiform mole

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • chorioadenoma (destruens) (D39.2)
    • malignant hydatidiform mole (D39.2)
    Use Additional
    • code from category O08 to identify any associated complication.
    Hydatidiform mole
Approximate Synonyms
  • Complete hydatidiform mole
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 rare cancer in women of childbearing age in which cancer cells grow in the tissues that are formed in the uterus after conception. Also called gestational trophoblastic disease, gestational trophoblastic neoplasia, gestational trophoblastic tumor, or choriocarcinoma.
  • 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.
  • Derived from the fertilization of an anuclear ovum by one or sometimes two haploid sperm. Its molar chromosomes derive entirely from the paternal origin. It has no identifiable embryonic or fetal tissue. The chorionic villi have generalized swelling and diffuse trophoblastic hyperplasia. Most complete moles (>90%) have a 46,xx karyotype and the rest 46,xy karyotype.
  • 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.
ICD-10-CM O01.0 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 817 Other antepartum diagnoses with o.r. Procedure with mcc
  • 818 Other antepartum diagnoses with o.r. Procedure with cc
  • 819 Other antepartum diagnoses with o.r. Procedure without cc/mcc
  • 831 Other antepartum diagnoses without o.r. Procedure with mcc
  • 832 Other antepartum diagnoses without o.r. Procedure with cc
  • 833 Other antepartum diagnoses without o.r. Procedure without cc/mcc

Convert O01.0 to ICD-9-CM

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

Diagnosis Index entries containing back-references to O01.0:
  • Hydatidiform mole (benign) (complicating pregnancy) (delivered) (undelivered) O01.9
    ICD-10-CM Diagnosis Code O01.9

    Hydatidiform mole, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
    Applicable To
    • Trophoblastic disease NOS
    • Vesicular mole NOS
    • classical O01.0
    • complete O01.0
  • Mole (pigmented) - see also Nevus
    • hydatid, hydatidiform (benign) (complicating pregnancy) (delivered) (undelivered) O01.9
      ICD-10-CM Diagnosis Code O01.9

      Hydatidiform mole, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code Maternity Dx (12-55 years)
      Applicable To
      • Trophoblastic disease NOS
      • Vesicular mole NOS
      • classical O01.0
      • complete O01.0

ICD-10-CM Codes Adjacent To O01.0
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
O03 Spontaneous abortion

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