ICD-10-CM > M00-M99 > M86-M90 > M89 > M89.0 > M89.03 M89.03 Algoneurodystrophy, forearm Non-Billable/Non-Specific Codes M89.031Algoneurodystrophy, right forearmM89.032Algoneurodystrophy, left forearmM89.039Algoneurodystrophy, unspecified forearm