Convert ICD-10 Code M31.31 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M31.31 Wegener's granulomatosis with renal involvement		446.4 Wegener's granulomatosis
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 M31.31 - wegener's granulomatosis with renal involvement based on the most recent General Equivalence Mappings (GEMS) information.