ICD-10-CM > M00-M99 > M80-M85 > M85 > M85.6 > M85.62 M85.62 Other cyst of bone, upper arm Non-Billable/Non-Specific Codes M85.621Other cyst of bone, right upper armM85.622Other cyst of bone, left upper armM85.629Other cyst of bone, unspecified upper arm