ICD-10-CM > M00-M99 > M60-M63 > M62 > M62.5 > M62.54 M62.54 Muscle wasting and atrophy, not elsewhere classified, hand Non-Billable/Non-Specific Codes M62.541Muscle wasting and atrophy, not elsewhere classified, right handM62.542Muscle wasting and atrophy, not elsewhere classified, left handM62.549Muscle wasting and atrophy, not elsewhere classified, unspecified hand