ICD-10-CM > M00-M99 > M91-M94 > M93 > M93.9 > M93.93 M93.93 Osteochondropathy, unspecified of forearm Non-Billable/Non-Specific Codes M93.931Osteochondropathy, unspecified, right forearmM93.932Osteochondropathy, unspecified, left forearmM93.939Osteochondropathy, unspecified, unspecified forearm