ICD-10-CM > M00-M99 > M80-M85 > M85 > M85.5 > M85.51 M85.51 Aneurysmal bone cyst, shoulder Non-Billable/Non-Specific Codes M85.511Aneurysmal bone cyst, right shoulderM85.512Aneurysmal bone cyst, left shoulderM85.519Aneurysmal bone cyst, unspecified shoulder