Convert ICD-10 Code O42.013 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
O42.013 Pretrm prem ROM, onset labor w/n 24 hours of rupt, third tri		658.11 Prem rupt membran-deliv
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.
O42.013 Pretrm prem ROM, onset labor w/n 24 hours of rupt, third tri		658.13 Prem rupt memb-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 O42.013 - preterm premature rupture of membranes, onset of labor within 24 hours of rupture, third trimester based on the most recent General Equivalence Mappings (GEMS) information.