ICD-10-CM > M00-M99 > M60-M63 > M61 > M61.4 > M61.46 M61.46 Other calcification of muscle, lower leg Non-Billable/Non-Specific Codes M61.461Other calcification of muscle, right lower legM61.462Other calcification of muscle, left lower legM61.469Other calcification of muscle, unspecified lower leg