O45.09Premature separation of placenta with other coagulation defect

O45.09 is the ICD-10-CM diagnosis code for premature separation of placenta with other coagulation defect. It belongs to category O45 (premature separation of placenta [abruptio placentae]), 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 O45.0, choose O45.09 (other coagulation defect) only when documentation doesn't support a more specific option: unspecified (O45.00), afibrinogenemia (O45.01) and disseminated intravascular coagulation (O45.02).

To report this condition, pick the subcode that matches the documentation: O45.091 (first trimester), O45.092 (second trimester), O45.093 (third trimester) and O45.099 (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.