ICD-10-CM > M00-M99 > M80-M85 > M85 > M85.4 > M85.44 M85.44 Solitary bone cyst, hand Non-Billable/Non-Specific Codes M85.441Solitary bone cyst, right handM85.442Solitary bone cyst, left handM85.449Solitary bone cyst, unspecified hand