| O644XX4 | Obstructed labor due to shoulder presentation, fetus 4 |
| O644XX5 | Obstructed labor due to shoulder presentation, fetus 5 |
| O644XX9 | Obstructed labor due to shoulder presentation, other fetus |
| O645 | Obstructed labor due to compound presentation |
| O645XX0 | Obstructed labor due to compound presentation, not applicable or unspecified |
| O645XX1 | Obstructed labor due to compound presentation, fetus 1 |
| O645XX2 | Obstructed labor due to compound presentation, fetus 2 |
| O645XX3 | Obstructed labor due to compound presentation, fetus 3 |
| O645XX4 | Obstructed labor due to compound presentation, fetus 4 |
| O645XX5 | Obstructed labor due to compound presentation, fetus 5 |
| O645XX9 | Obstructed labor due to compound presentation, other fetus |
| O648 | Obstructed labor due to other malposition and malpresentation |
| O648XX0 | Obstructed labor due to oth malposition and malpresent, unsp Obstructed labor due to other malposition and malpresentation, not applicable or unspecified |
| O648XX1 | Obstructed labor due to other malposition and malpresentation, fetus 1 |
| O648XX2 | Obstructed labor due to other malposition and malpresentation, fetus 2 |
| O648XX3 | Obstructed labor due to other malposition and malpresentation, fetus 3 |
| O648XX4 | Obstructed labor due to other malposition and malpresentation, fetus 4 |
| O648XX5 | Obstructed labor due to other malposition and malpresentation, fetus 5 |
| O648XX9 | Obstructed labor due to other malposition and malpresentation, other fetus |
| O649 | Obstructed labor due to malposition and malpresentation, unspecified |
| O649XX0 | Obstructed labor due to malposition and malpresentation, unspecified, not applicable or unspecified |
| O649XX1 | Obstructed labor due to malpos and malpresent, unsp, fetus 1 Obstructed labor due to malposition and malpresentation, unspecified, fetus 1 |
| O649XX2 | Obstructed labor due to malpos and malpresent, unsp, fetus 2 Obstructed labor due to malposition and malpresentation, unspecified, fetus 2 |
| O649XX3 | Obstructed labor due to malpos and malpresent, unsp, fetus 3 Obstructed labor due to malposition and malpresentation, unspecified, fetus 3 |
| O649XX4 | Obstructed labor due to malpos and malpresent, unsp, fetus 4 Obstructed labor due to malposition and malpresentation, unspecified, fetus 4 |
| O649XX5 | Obstructed labor due to malpos and malpresent, unsp, fetus 5 Obstructed labor due to malposition and malpresentation, unspecified, fetus 5 |
| O649XX9 | Obstructed labor due to malposition and malpresentation, unspecified, other fetus |
| O65 | Obstructed labor due to maternal pelvic abnormality |
| O650 | Obstructed labor due to deformed pelvis |
| O651 | Obstructed labor due to generally contracted pelvis |
| O652 | Obstructed labor due to pelvic inlet contraction |
| O653 | Obstructed labor due to pelvic outlet and mid-cavity contraction |
| O654 | Obstructed labor due to fetopelvic disproportion, unspecified |
| O655 | Obstructed labor due to abnormality of maternal pelvic organs |
| O658 | Obstructed labor due to other maternal pelvic abnormalities |
| O659 | Obstructed labor due to maternal pelvic abnormality, unspecified |
| O66 | Other obstructed labor |
| O660 | Obstructed labor due to shoulder dystocia |
| O661 | Obstructed labor due to locked twins |
| O662 | Obstructed labor due to unusually large fetus |
| O663 | Obstructed labor due to other abnormalities of fetus |
| O664 | Failed trial of labor |
| O6640 | Failed trial of labor, unspecified |
| O6641 | Failed attempted vaginal birth after previous cesarean delivery |
| O665 | Attempted application of vacuum extractor and forceps |
| O666 | Obstructed labor due to other multiple fetuses |
| O668 | Other specified obstructed labor |
| O669 | Obstructed labor, unspecified |
| O67 | Labor and delivery complicated by intrapartum hemorrhage, not elsewhere classified |
| O670 | Intrapartum hemorrhage with coagulation defect |