ICD-10-CM > M00-M99 > M86-M90 > M89 > M89.0 > M89.02 M89.02 Algoneurodystrophy, upper arm Non-Billable/Non-Specific Codes M89.021Algoneurodystrophy, right upper armM89.022Algoneurodystrophy, left upper armM89.029Algoneurodystrophy, unspecified upper arm