ICD-10-CM > M00-M99 > M60-M63 > M61 > M61.5 > M61.52 M61.52 Other ossification of muscle, upper arm Non-Billable/Non-Specific Codes M61.521Other ossification of muscle, right upper armM61.522Other ossification of muscle, left upper armM61.529Other ossification of muscle, unspecified upper arm