Convert ICD-10 Code O24.311 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
O24.311 Unsp pre-existing diabetes in pregnancy, first trimester		648.01 Diabetes-delivered
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.
O24.311 Unsp pre-existing diabetes in pregnancy, first trimester		648.03 Diabetes-antepartum
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 O24.311 - unspecified pre-existing diabetes mellitus in pregnancy, first trimester based on the most recent General Equivalence Mappings (GEMS) information.