Convert ICD-10 Code O99.311 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
O99.311 Alcohol use complicating pregnancy, first trimester		648.41 Mental disorder-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.
O99.311 Alcohol use complicating pregnancy, first trimester		648.43 Mental disorder-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 O99.311 - alcohol use complicating pregnancy, first trimester based on the most recent General Equivalence Mappings (GEMS) information.