| O6012X4 | Preterm labor second trimester with preterm delivery second trimester, fetus 4 |
| O6012X5 | Preterm labor second trimester with preterm delivery second trimester, fetus 5 |
| O6012X9 | Preterm labor second trimester with preterm delivery second trimester, other fetus |
| O6013 | Preterm labor second trimester with preterm delivery third trimester |
| O6013X0 | Preterm labor second trimester with preterm delivery third trimester, not applicable or unspecified |
| O6013X1 | Preterm labor second trimester with preterm delivery third trimester, fetus 1 |
| O6013X2 | Preterm labor second trimester with preterm delivery third trimester, fetus 2 |
| O6013X3 | Preterm labor second trimester with preterm delivery third trimester, fetus 3 |
| O6013X4 | Preterm labor second trimester with preterm delivery third trimester, fetus 4 |
| O6013X5 | Preterm labor second trimester with preterm delivery third trimester, fetus 5 |
| O6013X9 | Preterm labor second trimester with preterm delivery third trimester, other fetus |
| O6014 | Preterm labor third trimester with preterm delivery third trimester |
| O6014X0 | Preterm labor third trimester with preterm delivery third trimester, not applicable or unspecified |
| O6014X1 | Preterm labor third trimester with preterm delivery third trimester, fetus 1 |
| O6014X2 | Preterm labor third trimester with preterm delivery third trimester, fetus 2 |
| O6014X3 | Preterm labor third trimester with preterm delivery third trimester, fetus 3 |
| O6014X4 | Preterm labor third trimester with preterm delivery third trimester, fetus 4 |
| O6014X5 | Preterm labor third trimester with preterm delivery third trimester, fetus 5 |
| O6014X9 | Preterm labor third trimester with preterm delivery third trimester, other fetus |
| O602 | Term delivery with preterm labor |
| O6020 | Term delivery with preterm labor, unspecified trimester |
| O6020X0 | Term delivery with preterm labor, unspecified trimester, not applicable or unspecified |
| O6020X1 | Term delivery with preterm labor, unspecified trimester, fetus 1 |
| O6020X2 | Term delivery with preterm labor, unspecified trimester, fetus 2 |
| O6020X3 | Term delivery with preterm labor, unspecified trimester, fetus 3 |
| O6020X4 | Term delivery with preterm labor, unspecified trimester, fetus 4 |
| O6020X5 | Term delivery with preterm labor, unspecified trimester, fetus 5 |
| O6020X9 | Term delivery with preterm labor, unspecified trimester, other fetus |
| O6022 | Term delivery with preterm labor, second trimester |
| O6022X0 | Term delivery with preterm labor, second trimester, not applicable or unspecified |
| O6022X1 | Term delivery with preterm labor, second trimester, fetus 1 |
| O6022X2 | Term delivery with preterm labor, second trimester, fetus 2 |
| O6022X3 | Term delivery with preterm labor, second trimester, fetus 3 |
| O6022X4 | Term delivery with preterm labor, second trimester, fetus 4 |
| O6022X5 | Term delivery with preterm labor, second trimester, fetus 5 |
| O6022X9 | Term delivery with preterm labor, second trimester, other fetus |
| O6023 | Term delivery with preterm labor, third trimester |
| O6023X0 | Term delivery with preterm labor, third trimester, not applicable or unspecified |
| O6023X1 | Term delivery with preterm labor, third trimester, fetus 1 |
| O6023X2 | Term delivery with preterm labor, third trimester, fetus 2 |
| O6023X3 | Term delivery with preterm labor, third trimester, fetus 3 |
| O6023X4 | Term delivery with preterm labor, third trimester, fetus 4 |
| O6023X5 | Term delivery with preterm labor, third trimester, fetus 5 |
| O6023X9 | Term delivery with preterm labor, third trimester, oth fetus Term delivery with preterm labor, third trimester, other fetus |
| O61 | Failed induction of labor |
| O610 | Failed medical induction of labor |
| O611 | Failed instrumental induction of labor |
| O618 | Other failed induction of labor |
| O619 | Failed induction of labor, unspecified |
| O62 | Abnormalities of forces of labor |