Hypertonic, incoordinate, and prolonged uterine contractions

**Inclusion terms:** - 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)