Convert ICD-10 Code R99 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
R99 Ill-defined and unknown cause of mortality		798.0 Sudden infant death synd
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.
R99 Ill-defined and unknown cause of mortality		799.9 Unkn cause morb/mort NEC
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 R99 - ill-defined and unknown cause of mortality based on the most recent General Equivalence Mappings (GEMS) information.