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postpartum atony of uterus without hemorrhage (O75.89)
O62.3 Precipitate labor
O62.4 Hypertonic, incoordinate, and prolonged uterine contractions
Cervical spasm
Contraction ring dystocia
Dyscoordinate labor
Hour-glass contraction of uterus
Hypertonic uterine dysfunction
Incoordinate uterine action
Tetanic contractions
Uterine dystocia NOS
Uterine spasm
Excludes1: dystocia (fetal) (maternal) NOS (O66.9)
O62.8 Other abnormalities of forces of labor
O62.9 Abnormality of forces of labor, unspecified

O63 Long labor

O63.0 Prolonged first stage (of labor)
O63.1 Prolonged second stage (of labor)
O63.2 Delayed delivery of second twin, triplet, etc.
O63.9 Long labor, unspecified
Prolonged labor NOS

O64 Obstructed labor due to malposition and malpresentation of fetus

One of the following 7th characters is to be assigned to each code under category O64. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O64 that has a 7th character of 1 through 9.
0 not applicable or unspecified
1 fetus 1
2 fetus 2
3 fetus 3
4 fetus 4
5 fetus 5
9 other fetus
O64.0 Obstructed labor due to incomplete rotation of fetal head
Deep transverse arrest
Obstructed labor due to persistent occipitoiliac (position)
Obstructed labor due to persistent occipitoposterior (position)
Obstructed labor due to persistent occipitosacral (position)
Obstructed labor due to persistent occipitotransverse (position)
O64.1 Obstructed labor due to breech presentation
Obstructed labor due to buttocks presentation