Convert ICD-10 Code O10.012 to ICD-9

Source ICD-10 Code Target ICD-9 Code
O10.012
Pre-existing essential htn comp pregnancy, second trimester
642.01
Essen hyperten-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.
O10.012
Pre-existing essential htn comp pregnancy, second trimester
642.03
Essen hyperten-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 O10.012 - pre-existing essential hypertension complicating pregnancy, second trimester based on the most recent General Equivalence Mappings (GEMS) information.