ICD-10-CM > M00-M99 > M80-M85 > M85 > M85.5 > M85.54 M85.54 Aneurysmal bone cyst, hand Non-Billable/Non-Specific Codes M85.541Aneurysmal bone cyst, right handM85.542Aneurysmal bone cyst, left handM85.549Aneurysmal bone cyst, unspecified hand