2021 ICD-10-CM Diagnosis Code O45.9

Premature separation of placenta, unspecified

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • O45.9 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 O45.9 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of O45.9 - other international versions of ICD-10 O45.9 may differ.
Applicable To
  • Abruptio placentae NOS
The following code(s) above O45.9 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 O45.9:
  • O00-O9A
    2021 ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    • 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
Clinical Information
  • Premature separation of the normally implanted placenta from the uterus. Signs of varying degree of severity include uterine bleeding, uterine muscle hypertonia, and fetal distress or fetal death.
  • The separation of the placenta from the maternal uterine attachment when it occurs after the twentieth week of the pregnancy.
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 O45.9:
  • Abruptio placentae O45.9-
  • Delivery (childbirth) (labor)
  • Hemorrhage, hemorrhagic (concealed) R58
    ICD-10-CM Diagnosis Code R58

    Hemorrhage, not elsewhere classified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Hemorrhage NOS
    Type 1 Excludes
    • hemorrhage included with underlying conditions, such as:
    • acute duodenal ulcer with hemorrhage (K26.0)
    • acute gastritis with bleeding (K29.01)
    • ulcerative enterocolitis with rectal bleeding (K51.01)
    • antepartum (with) O46.90
      ICD-10-CM Diagnosis Code O46.90

      Antepartum hemorrhage, unspecified, unspecified trimester

        2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
  • 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)

ICD-10-CM Codes Adjacent To O45.9
O45.091 …… first trimester
O45.092 …… second trimester
O45.093 …… third trimester
O45.099 …… unspecified trimester
O45.8 Other premature separation of placenta
O45.8X Other premature separation of placenta
O45.8X1 …… first trimester
O45.8X2 …… second trimester
O45.8X3 …… third trimester
O45.8X9 …… unspecified trimester
O45.9 Premature separation of placenta, unspecified
O45.90 …… unspecified trimester
O45.91 …… first trimester
O45.92 …… second trimester
O45.93 …… third trimester
O46 Antepartum hemorrhage, not elsewhere classified
O46.0 Antepartum hemorrhage with coagulation defect
O46.00 Antepartum hemorrhage with coagulation defect, unspecified
O46.001 …… first trimester
O46.002 …… second trimester
O46.003 …… third trimester

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