Convert ICD-10 Code M33.22 to ICD-9

Source ICD-10 Code Target ICD-9 Code
M33.22
Polymyositis with myopathy
710.4
Polymyositis
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
M33.22
Polymyositis with myopathy
359.6
Infl myopathy in oth dis
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 M33.22 - polymyositis with myopathy based on the most recent General Equivalence Mappings (GEMS) information.