Convert ICD-10 Code M90.549 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M90.549 Osteonecrosis in diseases classified elsewhere, unsp hand		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.
M90.549 Osteonecrosis in diseases classified elsewhere, unsp hand		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 M90.549 - osteonecrosis in diseases classified elsewhere, unspecified hand based on the most recent General Equivalence Mappings (GEMS) information.