Convert ICD-10 Code O99.323 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
O99.323 Drug use complicating pregnancy, third trimester		648.31 Drug dependence-deliver
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
O99.323 Drug use complicating pregnancy, third trimester		648.33 Drug dependence-antepart
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

ICD-10 to ICD-9 crosswalk for code O99.323 - drug use complicating pregnancy, third trimester based on the most recent General Equivalence Mappings (GEMS) information.