Convert ICD-10 Code O10.219 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
O10.219 Pre-exist hyp chronic kidney disease comp preg, unsp tri		642.20 Old hyperten 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 O10.219 - pre-existing hypertensive chronic kidney disease complicating pregnancy, unspecified trimester based on the most recent General Equivalence Mappings (GEMS) information.