{"code":"M85.029","type":"code","title":"Fibrous dysplasia (monostotic), unspecified upper arm","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["osteogenesis imperfecta (Q78.0)","osteopetrosis (Q78.2)","osteopoikilosis (Q78.8)","polyostotic fibrous dysplasia (Q78.1)"],"excludes2":["fibrous dysplasia of jaw (M27.8)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Fibrous dysplasia (monostotic), unspecified upper arm is a billable ICD-10-CM diagnosis code (M85.029). Excludes1 (not coded here): osteogenesis imperfecta (Q78.0); osteopetrosis (Q78.2); osteopoikilosis (Q78.8); polyostotic fibrous dysplasia (Q78.1). Excludes2 (not included here): fibrous dysplasia of jaw (M27.8).","officialDefinition":"Fibrous dysplasia (monostotic), unspecified upper arm is a billable ICD-10-CM diagnosis code (M85.029). Excludes1 (not coded here): osteogenesis imperfecta (Q78.0); osteopetrosis (Q78.2); osteopoikilosis (Q78.8); polyostotic fibrous dysplasia (Q78.1). Excludes2 (not included here): fibrous dysplasia of jaw (M27.8).","seventhCharacterInstructions":[],"workflowProtocols":[],"guidelines":{"whenToUse":[],"whenNotToUse":[],"commonBillingMistakes":[],"codeComparisons":[],"documentationChecklist":[]},"domainLandscape":{"summary":"Primary diagnostic domain and clinical landscape evaluation.","keyCategories":[],"diagnosticContinuum":"Progression continuum from acute presentation to resolution."},"children":[],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":"","noteProvenance":{"osteogenesis imperfecta (Q78.0)":"M85","osteopetrosis (Q78.2)":"M85","osteopoikilosis (Q78.8)":"M85","polyostotic fibrous dysplasia (Q78.1)":"M85","fibrous dysplasia of jaw (M27.8)":"M85.0"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}