O45.00Premature separation of placenta with coagulation defect, unspecified

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

To report this condition, pick the subcode that matches the documentation: O45.001 (first trimester), O45.002 (second trimester), O45.003 (third trimester) and O45.009 (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.