The ICD-9 code range COMPLICATIONS OCCURRING MAINLY IN THE COURSE OF LABOR AND DELIVERY for 660-669 is medical classification list by the World Health Organization (WHO).
Abnormality of forces of labor
Umbilical cord complications during labor and delivery
Trauma to perineum and vulva during delivery
Other obstetrical trauma
Retained placenta or membranes without hemorrhage
Complications of the administration of anesthetic or other sedation in labor and delivery
Other complications of labor and delivery not elsewhere classified