ICD-10-CM > M00-M99 > M60-M63 > M62 > M62.2 > M62.23 M62.23 Nontraumatic ischemic infarction of muscle, forearm Non-Billable/Non-Specific Codes M62.231Nontraumatic ischemic infarction of muscle, right forearmM62.232Nontraumatic ischemic infarction of muscle, left forearmM62.239Nontraumatic ischemic infarction of muscle, unspecified forearm