O46.09Antepartum hemorrhage with other coagulation defect

O46.09 is the ICD-10-CM diagnosis code for antepartum hemorrhage with other 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 O46.0, choose O46.09 (other coagulation defect) only when documentation doesn't support a more specific option: unspecified (O46.00), afibrinogenemia (O46.01) and disseminated intravascular coagulation (O46.02).

To report this condition, pick the subcode that matches the documentation: O46.091 (first trimester), O46.092 (second trimester), O46.093 (third trimester) and O46.099 (unspecified trimester).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.