Convert ICD-10 Code M90.571 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M90.571 Osteonecrosis in diseases classd elswhr, right ank/ft		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.
M90.571 Osteonecrosis in diseases classd elswhr, right ank/ft		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 M90.571 - osteonecrosis in diseases classified elsewhere, right ankle and foot based on the most recent General Equivalence Mappings (GEMS) information.