ICD-10-CM 2027 diagnosis code
O46.0Antepartum hemorrhage with coagulation defect
O46.0 is a header code, so it can't be reported by itself. Choose one of the 4 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 O46.0
O46.0 is the ICD-10-CM diagnosis code for antepartum hemorrhage with coagulation defect. It belongs to category O46 (antepartum hemorrhage, not elsewhere classified), 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 4 subcodes must be used instead.
Within O46 (antepartum hemorrhage, not elsewhere classified), O46.0 is specifically for antepartum hemorrhage with coagulation defect. Related codes cover other antepartum hemorrhage (O46.8) and antepartum hemorrhage, unspecified (O46.9).
To report this condition, pick the subcode that matches the documentation: O46.00 (unspecified), O46.01 (afibrinogenemia), O46.02 (coagulation) and O46.09 (defect).
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 O46.0
- O46.00Antepartum hemorrhage with coagulation defect, unspecified
- O46.001Antepartum hemorrhage with coagulation defect, unspecified, first trimesterBillable
- O46.002Antepartum hemorrhage with coagulation defect, unspecified, second trimesterBillable
- O46.003Antepartum hemorrhage with coagulation defect, unspecified, third trimesterBillable
- O46.009Antepartum hemorrhage with coagulation defect, unspecified, unspecified trimesterBillable
- O46.01Antepartum hemorrhage with afibrinogenemia
- O46.011Antepartum hemorrhage with afibrinogenemia, first trimesterBillable
- O46.012Antepartum hemorrhage with afibrinogenemia, second trimesterBillable
- O46.013Antepartum hemorrhage with afibrinogenemia, third trimesterBillable
- O46.019Antepartum hemorrhage with afibrinogenemia, unspecified trimesterBillable
- O46.02Antepartum hemorrhage with disseminated intravascular coagulation
- O46.021Antepartum hemorrhage with disseminated intravascular coagulation, first trimesterBillable
- O46.022Antepartum hemorrhage with disseminated intravascular coagulation, second trimesterBillable
- O46.023Antepartum hemorrhage with disseminated intravascular coagulation, third trimesterBillable
- O46.029Antepartum hemorrhage with disseminated intravascular coagulation, unspecified trimesterBillable
- O46.09Antepartum hemorrhage with other coagulation defect
- O46.091Antepartum hemorrhage with other coagulation defect, first trimesterBillable
- O46.092Antepartum hemorrhage with other coagulation defect, second trimesterBillable
- O46.093Antepartum hemorrhage with other coagulation defect, third trimesterBillable
- O46.099Antepartum hemorrhage with other coagulation defect, unspecified trimesterBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to O46.0.
Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.
Codes whose notes reference O46.0
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 O46.0
Is O46.0 billable?
- No. O46.0 is a header code. Report one of its more specific subcodes instead.