| O33.3XX0 | Maternal care for disproportion due to outlet contraction of pelvis, not applicable or unspecified | BILLABLE CODE |
| O33.3XX1 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 1 | BILLABLE CODE |
| O33.3XX2 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 2 | BILLABLE CODE |
| O33.3XX3 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 3 | BILLABLE CODE |
| O33.3XX4 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 4 | BILLABLE CODE |
| O33.3XX5 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 5 | BILLABLE CODE |
| O33.3XX9 | Maternal care for disproportion due to outlet contraction of pelvis, other fetus | BILLABLE CODE |
