Convert ICD-10 Code O42.00 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
O42.00 Prem ROM, onset labor w/n 24 hr of rupt, unsp weeks of gest		658.10 Prem rupt membran-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 O42.00 - premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified weeks of gestation based on the most recent General Equivalence Mappings (GEMS) information.