ICD-10-CM > M00-M99 > M60-M63 > M62 > M62.5 > M62.56 M62.56 Muscle wasting and atrophy, not elsewhere classified, lower leg Non-Billable/Non-Specific Codes M62.561Muscle wasting and atrophy, not elsewhere classified, right lower legM62.562Muscle wasting and atrophy, not elsewhere classified, left lower legM62.569Muscle wasting and atrophy, not elsewhere classified, unspecified lower leg