| O445 | Low lying placenta with hemorrhage |
| O4450 | Low lying placenta with hemorrhage, unspecified trimester |
| O4451 | Low lying placenta with hemorrhage, first trimester |
| O4452 | Low lying placenta with hemorrhage, second trimester |
| O4453 | Low lying placenta with hemorrhage, third trimester |
| O45 | Premature separation of placenta [abruptio placentae] |
| O450 | Premature separation of placenta with coagulation defect |
| O4500 | Premature separation of placenta with coagulation defect, unspecified |
| O45001 | Premature separation of placenta with coagulation defect, unspecified, first trimester |
| O45002 | Premature separation of placenta with coagulation defect, unspecified, second trimester |
| O45003 | Premature separation of placenta with coagulation defect, unspecified, third trimester |
| O45009 | Prem separtn of placenta w coag defect, unsp, unsp trimester Premature separation of placenta with coagulation defect, unspecified, unspecified trimester |
| O4501 | Premature separation of placenta with afibrinogenemia |
| O45011 | Premature separation of placenta with afibrinogenemia, first trimester |
| O45012 | Prem separtn of placenta w afibrinogenemia, second trimester Premature separation of placenta with afibrinogenemia, second trimester |
| O45013 | Premature separation of placenta with afibrinogenemia, third trimester |
| O45019 | Premature separation of placenta with afibrinogenemia, unspecified trimester |
| O4502 | Premature separation of placenta with disseminated intravascular coagulation |
| O45021 | Premature separation of placenta with disseminated intravascular coagulation, first trimester |
| O45022 | Prem separtn of placenta w dissem intravasc coag, second tri Premature separation of placenta with disseminated intravascular coagulation, second trimester |
| O45023 | Premature separation of placenta with disseminated intravascular coagulation, third trimester |
| O45029 | Premature separation of placenta with disseminated intravascular coagulation, unspecified trimester |
| O4509 | Premature separation of placenta with oth coagulation defect Premature separation of placenta with other coagulation defect |
| O45091 | Premature separation of placenta with other coagulation defect, first trimester |
| O45092 | Prem separtn of placenta w oth coag defect, second trimester Premature separation of placenta with other coagulation defect, second trimester |
| O45093 | Premature separation of placenta with other coagulation defect, third trimester |
| O45099 | Premature separation of placenta with other coagulation defect, unspecified trimester |
| O458 | Other premature separation of placenta |
| O458X | Other premature separation of placenta |
| O458X1 | Other premature separation of placenta, first trimester |
| O458X2 | Other premature separation of placenta, second trimester |
| O458X3 | Other premature separation of placenta, third trimester |
| O458X9 | Other premature separation of placenta, unspecified trimester |
| O459 | Premature separation of placenta, unspecified |
| O4590 | Premature separation of placenta, unspecified, unspecified trimester |
| O4591 | Premature separation of placenta, unspecified, first trimester |
| O4592 | Premature separation of placenta, unspecified, second trimester |
| O4593 | Premature separation of placenta, unspecified, third trimester |
| O46 | Antepartum hemorrhage, not elsewhere classified |
| O460 | Antepartum hemorrhage with coagulation defect |
| O4600 | Antepartum hemorrhage with coagulation defect, unspecified |
| O46001 | Antepartum hemorrhage with coagulation defect, unspecified, first trimester |
| O46002 | Antepartum hemorrhage with coagulation defect, unspecified, second trimester |
| O46003 | Antepartum hemorrhage with coagulation defect, unspecified, third trimester |
| O46009 | Antepartum hemorrhage with coagulation defect, unspecified, unspecified trimester |
| O4601 | Antepartum hemorrhage with afibrinogenemia |
| O46011 | Antepartum hemorrhage with afibrinogenemia, first trimester |
| O46012 | Antepartum hemorrhage with afibrinogenemia, second trimester Antepartum hemorrhage with afibrinogenemia, second trimester |
| O46013 | Antepartum hemorrhage with afibrinogenemia, third trimester |
| O46019 | Antepartum hemorrhage with afibrinogenemia, unspecified trimester |