ICD-10-CM > M00-M99 > M80-M85 > M85 > M85.0 > M85.01 M85.01 Fibrous dysplasia (monostotic), shoulder Non-Billable/Non-Specific Codes M85.011Fibrous dysplasia (monostotic), right shoulderM85.012Fibrous dysplasia (monostotic), left shoulderM85.019Fibrous dysplasia (monostotic), unspecified shoulder