ICD-10-CM > M00-M99 > M60-M63 > M62 > M62.4 > M62.46 M62.46 Contracture of muscle, lower leg Non-Billable/Non-Specific Codes M62.461Contracture of muscle, right lower legM62.462Contracture of muscle, left lower legM62.469Contracture of muscle, unspecified lower leg