Convert ICD-10 Code M90.559 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M90.559 Osteonecrosis in diseases classified elsewhere, unsp thigh		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.
M90.559 Osteonecrosis in diseases classified elsewhere, unsp thigh		733.42 Aseptic necrosis femur
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 M90.559 - osteonecrosis in diseases classified elsewhere, unspecified thigh based on the most recent General Equivalence Mappings (GEMS) information.