Convert ICD-10 Code O11.5 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
O11.5 Pre-existing htn with pre-eclampsia, comp the puerperium		642.74 Tox w old hyper-postpart
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 O11.5 - pre-existing hypertension with pre-eclampsia, complicating the puerperium based on the most recent General Equivalence Mappings (GEMS) information.