Convert ICD-10 Code M90.531 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M90.531 Osteonecrosis in diseases classd elswhr, right forearm		731.8 Bone involv in oth dis
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
M90.531 Osteonecrosis in diseases classd elswhr, right forearm		733.49 Asept necrosis bone NEC
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.

ICD-10 to ICD-9 crosswalk for code M90.531 - osteonecrosis in diseases classified elsewhere, right forearm based on the most recent General Equivalence Mappings (GEMS) information.