2021 ICD-10-CM Diagnosis Code O30.01

Twin pregnancy, monochorionic/monoamniotic

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • O30.01 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM O30.01 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of O30.01 - other international versions of ICD-10 O30.01 may differ.
Applicable To
  • Twin pregnancy, one placenta, one amniotic sac
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 O30.01. 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.
  • conjoined twins (
    ICD-10-CM Diagnosis Code O30.02

    Conjoined twin pregnancy

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    O30.02-
    )
The following code(s) above O30.01 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 O30.01:
  • O00-O9A
    2021 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
  • O30
    ICD-10-CM Diagnosis Code O30

    Multiple gestation

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Code Also
    • any complications specific to multiple gestation
    Multiple gestation
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
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to O30.01:
  • Pregnancy (single) (uterine) Z33.1
    - see also Delivery and Puerperal
    ICD-10-CM Diagnosis Code Z33.1

    Pregnant state, incidental

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
    Applicable To
    • Pregnancy NOS
    • Pregnant state NOS
    Type 1 Excludes
    • complications of pregnancy (O00-O9A)
    • pregnant state, gestational carrier (Z33.3)
    • twin O30.00-
      ICD-10-CM Diagnosis Code O30.00-

      Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs

        2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
      • monochorionic/monoamniotic O30.01- (one placenta, one amniotic sac)

ICD-10-CM Codes Adjacent To O30.01
O29.91 …… first trimester
O29.92 …… second trimester
O29.93 …… third trimester
O30 Multiple gestation
O30.0 Twin pregnancy
O30.00 Twin pregnancy, unspecified number of placenta and unspecified number of amniotic sacs
O30.001 …… first trimester
O30.002 …… second trimester
O30.003 …… third trimester
O30.009 …… unspecified trimester
O30.01 Twin pregnancy, monochorionic/monoamniotic
O30.011 …… first trimester
O30.012 …… second trimester
O30.013 …… third trimester
O30.019 …… unspecified trimester
O30.02 Conjoined twin pregnancy
O30.021 …… first trimester
O30.022 …… second trimester
O30.023 …… third trimester
O30.029 …… unspecified trimester
O30.03 Twin pregnancy, monochorionic/diamniotic

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