ICD-10-CM 2027 diagnosis code
O45Premature separation of placenta [abruptio placentae]
O45 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About O45
O45 is the ICD-10-CM diagnosis code for premature separation of placenta [abruptio placentae]. It belongs to block O30-O48 (maternal care related to the fetus and amniotic cavity and possible delivery problems) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: O45.0 (defect), O45.8 (placenta) and O45.9 (unspecified).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under O45
- O45.0Premature separation of placenta with coagulation defect
- O45.00Premature separation of placenta with coagulation defect, unspecified
- O45.001Premature separation of placenta with coagulation defect, unspecified, first trimesterBillable
- O45.002Premature separation of placenta with coagulation defect, unspecified, second trimesterBillable
- O45.003Premature separation of placenta with coagulation defect, unspecified, third trimesterBillable
- O45.009Premature separation of placenta with coagulation defect, unspecified, unspecified trimesterBillable
- O45.01Premature separation of placenta with afibrinogenemia
- O45.011Premature separation of placenta with afibrinogenemia, first trimesterBillable
- O45.012Premature separation of placenta with afibrinogenemia, second trimesterBillable
- O45.013Premature separation of placenta with afibrinogenemia, third trimesterBillable
- O45.019Premature separation of placenta with afibrinogenemia, unspecified trimesterBillable
- O45.02Premature separation of placenta with disseminated intravascular coagulation
- O45.021Premature separation of placenta with disseminated intravascular coagulation, first trimesterBillable
- O45.022Premature separation of placenta with disseminated intravascular coagulation, second trimesterBillable
- O45.023Premature separation of placenta with disseminated intravascular coagulation, third trimesterBillable
- O45.029Premature separation of placenta with disseminated intravascular coagulation, unspecified trimesterBillable
- O45.09Premature separation of placenta with other coagulation defect
- O45.091Premature separation of placenta with other coagulation defect, first trimesterBillable
- O45.092Premature separation of placenta with other coagulation defect, second trimesterBillable
- O45.093Premature separation of placenta with other coagulation defect, third trimesterBillable
- O45.099Premature separation of placenta with other coagulation defect, unspecified trimesterBillable
- O45.00Premature separation of placenta with coagulation defect, unspecified
- O45.8Other premature separation of placenta
- O45.9Premature separation of placenta, unspecified
- O45.90Premature separation of placenta, unspecified, unspecified trimesterBillable
- O45.91Premature separation of placenta, unspecified, first trimesterBillable
- O45.92Premature separation of placenta, unspecified, second trimesterBillable
- O45.93Premature separation of placenta, unspecified, third trimesterBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to O45.
Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.
Codes whose notes reference O45
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about O45
Is O45 billable?
- No. O45 is a header code. Report one of its more specific subcodes instead.