Convert ICD-10 Code O26.00 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
O26.00 Excessive weight gain in pregnancy, unspecified trimester		646.10 Edema in preg-unspec
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 O26.00 - excessive weight gain in pregnancy, unspecified trimester based on the most recent General Equivalence Mappings (GEMS) information.