ICD-10-CM > M00-M99 > M60-M63 > M61 > M61.2 > M61.23 M61.23 Paralytic calcification and ossification of muscle, forearm Non-Billable/Non-Specific Codes M61.231Paralytic calcification and ossification of muscle, right forearmM61.232Paralytic calcification and ossification of muscle, left forearmM61.239Paralytic calcification and ossification of muscle, unspecified forearm