ICD-10-CM > M00-M99 > M80-M85 > M85 > M85.0 M85.0 Fibrous dysplasia (monostotic) Non-Billable/Non-Specific Type 2 Excludes fibrous dysplasia of jaw (M27.8) Codes M85.00Fibrous dysplasia (monostotic), unspecified siteM85.01Fibrous dysplasia (monostotic), shoulderM85.011Fibrous dysplasia (monostotic), right shoulderM85.012Fibrous dysplasia (monostotic), left shoulderM85.019Fibrous dysplasia (monostotic), unspecified shoulderM85.02Fibrous dysplasia (monostotic), upper armM85.021Fibrous dysplasia (monostotic), right upper armM85.022Fibrous dysplasia (monostotic), left upper armM85.029Fibrous dysplasia (monostotic), unspecified upper armM85.03Fibrous dysplasia (monostotic), forearmM85.031Fibrous dysplasia (monostotic), right forearmM85.032Fibrous dysplasia (monostotic), left forearmM85.039Fibrous dysplasia (monostotic), unspecified forearmM85.04Fibrous dysplasia (monostotic), handM85.041Fibrous dysplasia (monostotic), right handM85.042Fibrous dysplasia (monostotic), left handM85.049Fibrous dysplasia (monostotic), unspecified handM85.05Fibrous dysplasia (monostotic), thighM85.051Fibrous dysplasia (monostotic), right thighM85.052Fibrous dysplasia (monostotic), left thighM85.059Fibrous dysplasia (monostotic), unspecified thighM85.06Fibrous dysplasia (monostotic), lower legM85.061Fibrous dysplasia (monostotic), right lower legM85.062Fibrous dysplasia (monostotic), left lower legM85.069Fibrous dysplasia (monostotic), unspecified lower legM85.07Fibrous dysplasia (monostotic), ankle and footM85.071Fibrous dysplasia (monostotic), right ankle and footM85.072Fibrous dysplasia (monostotic), left ankle and footM85.079Fibrous dysplasia (monostotic), unspecified ankle and footM85.08Fibrous dysplasia (monostotic), other siteM85.09Fibrous dysplasia (monostotic), multiple sites