ICD-10-CM > M00-M99 > M86-M90 > M88 > M88.8 > M88.82 M88.82 Osteitis deformans of upper arm Non-Billable/Non-Specific Codes M88.821Osteitis deformans of right upper armM88.822Osteitis deformans of left upper armM88.829Osteitis deformans of unspecified upper arm