Research Article
Maternal Opioid Drug Use during Pregnancy and Its Impact on Perinatal Morbidity, Mortality, and the Costs of Medical Care in the United States
Table 3
List of International Classification of Diseases, Ninth Edition, Clinical Modification Codes used to identify selected perinatal conditions.
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The code suffix “x” represents all possible codes that follow the stated code prefix. †Procedure codes, no diagnostic codes were used to define Cesarean section. |