661: Abnormality of forces of labor
Requires fifth digit; valid digits are in [brackets] under each code. see beginning of section 660-669 for definitions.
661.4 Hypertonic, incoordinate, or prolonged uterine contractions
[0,1,3]
Cervical spasm
Contraction ring (dystocia)
Dyscoordinate labor
Hourglass contraction of uterus
Hypertonic uterine dysfunction
Incoordinate uterine action
Retraction ring (Bandl's) (pathological)
Tetanic contractions
Uterine dystocia NOS
Uterine spasm

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