Convert ICD-9 Code 337.21 to ICD-10

Source ICD-9 Code		Target ICD-10 Code
337.21 Rflx sym dystrph up limb		G90.519 Complex regional pain syndrome I of unspecified upper limb
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-9 to ICD-10 crosswalk for code 337.21 - reflex sympathetic dystrophy of the upper limb based on the most recent General Equivalence Mappings (GEMS) information.