ICD-10-CM > M00-M99 > M60-M63 > M62 > M62.5 > M62.55 M62.55 Muscle wasting and atrophy, not elsewhere classified, thigh Non-Billable/Non-Specific Codes M62.551Muscle wasting and atrophy, not elsewhere classified, right thighM62.552Muscle wasting and atrophy, not elsewhere classified, left thighM62.559Muscle wasting and atrophy, not elsewhere classified, unspecified thigh