Convert ICD-9 Code 642.01 to ICD-10

Source ICD-9 Code		Target ICD-10 Code
642.01 Essen hyperten-delivered		O10.011 Pre-existing essential htn comp pregnancy, first trimester
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.
642.01 Essen hyperten-delivered		O10.012 Pre-existing essential htn comp pregnancy, second trimester
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.
642.01 Essen hyperten-delivered		O10.013 Pre-existing essential htn comp pregnancy, third trimester
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.
642.01 Essen hyperten-delivered		O10.02 Pre-existing essential hypertension complicating childbirth
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.
642.01 Essen hyperten-delivered		O10.911 Unsp pre-existing htn comp pregnancy, first trimester
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.
642.01 Essen hyperten-delivered		O10.912 Unsp pre-existing htn comp pregnancy, second trimester
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.
642.01 Essen hyperten-delivered		O10.913 Unsp pre-existing htn comp pregnancy, third trimester
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.
642.01 Essen hyperten-delivered		O10.92 Unsp pre-existing hypertension complicating childbirth
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-9 to ICD-10 crosswalk for code 642.01 - benign essential hypertension complicating pregnancy, childbirth, and the puerperium, delivered, with or without mention of antepartum condition based on the most recent General Equivalence Mappings (GEMS) information.