| O4602 | Antepartum hemorrhage with disseminated intravascular coagulation |
| O46021 | Antepart hemorrhage w dissem intravasc coag, first trimester Antepartum hemorrhage with disseminated intravascular coagulation, first trimester |
| O46022 | Antepartum hemorrhage with disseminated intravascular coagulation, second trimester |
| O46023 | Antepart hemorrhage w dissem intravasc coag, third trimester Antepartum hemorrhage with disseminated intravascular coagulation, third trimester |
| O46029 | Antepartum hemorrhage with disseminated intravascular coagulation, unspecified trimester |
| O4609 | Antepartum hemorrhage with other coagulation defect |
| O46091 | Antepartum hemorrhage with other coagulation defect, first trimester |
| O46092 | Antepartum hemorrhage with other coagulation defect, second trimester |
| O46093 | Antepartum hemorrhage with other coagulation defect, third trimester |
| O46099 | Antepartum hemorrhage with other coagulation defect, unspecified trimester |
| O468 | Other antepartum hemorrhage |
| O468X | Other antepartum hemorrhage |
| O468X1 | Other antepartum hemorrhage, first trimester |
| O468X2 | Other antepartum hemorrhage, second trimester |
| O468X3 | Other antepartum hemorrhage, third trimester |
| O468X9 | Other antepartum hemorrhage, unspecified trimester |
| O469 | Antepartum hemorrhage, unspecified |
| O4690 | Antepartum hemorrhage, unspecified, unspecified trimester |
| O4691 | Antepartum hemorrhage, unspecified, first trimester |
| O4692 | Antepartum hemorrhage, unspecified, second trimester |
| O4693 | Antepartum hemorrhage, unspecified, third trimester |
| O47 | False labor |
| O470 | False labor before 37 completed weeks of gestation |
| O4700 | False labor before 37 completed weeks of gestation, unspecified trimester |
| O4702 | False labor before 37 completed weeks of gestation, second trimester |
| O4703 | False labor before 37 completed weeks of gestation, third trimester |
| O471 | False labor at or after 37 completed weeks of gestation |
| O479 | False labor, unspecified |
| O48 | Late pregnancy |
| O480 | Post-term pregnancy |
| O481 | Prolonged pregnancy |
| O60 | Preterm labor |
| O600 | Preterm labor without delivery |
| O6000 | Preterm labor without delivery, unspecified trimester |
| O6002 | Preterm labor without delivery, second trimester |
| O6003 | Preterm labor without delivery, third trimester |
| O601 | Preterm labor with preterm delivery |
| O6010 | Preterm labor with preterm delivery, unspecified trimester |
| O6010X0 | Preterm labor with preterm delivery, unspecified trimester, not applicable or unspecified |
| O6010X1 | Preterm labor with preterm delivery, unsp trimester, fetus 1 Preterm labor with preterm delivery, unspecified trimester, fetus 1 |
| O6010X2 | Preterm labor with preterm delivery, unsp trimester, fetus 2 Preterm labor with preterm delivery, unspecified trimester, fetus 2 |
| O6010X3 | Preterm labor with preterm delivery, unsp trimester, fetus 3 Preterm labor with preterm delivery, unspecified trimester, fetus 3 |
| O6010X4 | Preterm labor with preterm delivery, unsp trimester, fetus 4 Preterm labor with preterm delivery, unspecified trimester, fetus 4 |
| O6010X5 | Preterm labor with preterm delivery, unsp trimester, fetus 5 Preterm labor with preterm delivery, unspecified trimester, fetus 5 |
| O6010X9 | Preterm labor with preterm delivery, unspecified trimester, other fetus |
| O6012 | Preterm labor second tri w preterm delivery second trimester Preterm labor second trimester with preterm delivery second trimester |
| O6012X0 | Preterm labor second tri w preterm delivery second tri, unsp Preterm labor second trimester with preterm delivery second trimester, not applicable or unspecified |
| O6012X1 | Preterm labor second trimester with preterm delivery second trimester, fetus 1 |
| O6012X2 | Preterm labor second trimester with preterm delivery second trimester, fetus 2 |
| O6012X3 | Preterm labor second trimester with preterm delivery second trimester, fetus 3 |