Convert ICD-10 Code R09.81 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
R09.81 Nasal congestion		478.19 Nasal & sinus dis 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 R09.81 - nasal congestion based on the most recent General Equivalence Mappings (GEMS) information.