M85.0
Fibrous dysplasia (monostotic)
Clinical Classification Guidelines
Excludes Type 2
- fibrous dysplasia of jaw (M27.8)
Medical Intelligence & Overview
Fibrous dysplasia (monostotic) is a bone disorder where normal bone tissue is replaced with fibrous tissue, leading to weakened and deformed bones. This condition primarily affects a single bone and is considered a benign (non-cancerous) growth that can cause pain, deformity, and fractures. While it can develop at any age, it is most often diagnosed in children and young adults. Understanding this condition can help patients recognize symptoms and get appropriate medical evaluation and management.
Causes & Symptoms
Clinical Causes: Genetic mutations that affect bone development Abnormal growth of bone-forming cells during early life No known environmental or lifestyle factors have been directly linked to the condition In some cases, the disorder results from post-zygotic mutations leading to mosaicism, meaning only some cells carry the mutation
Key Symptoms: Persistent bone pain or discomfort Bone deformities or abnormal shape Swelling over the affected bone Pathological fractures, which are fractures that occur with minimal trauma Limited mobility or function of the affected limb or joint Palpable mass or lump over the affected bone in some cases
Diagnostic & Treatment
Diagnosis Path: Diagnosing fibrous dysplasia involves a combination of medical history, physical evaluations, and imaging tests. Imaging techniques such as X-rays typically reveal characteristic features like a well-defined, ground-glass appearance of the affected bone. Additional tests may include:
Treatment Protocols: Management of fibrous dysplasia aims to control symptoms and prevent complications. Treatment plans are personalized and may involve:
Clinical Advice & FAQs
Billing Guidance
Is M85.0 a billable ICD-10 code?
Yes, M85.0 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M85.0?
Clinical documentation must specify the nature of Fibrous dysplasia (monostotic) and any associated comorbidities for accurate reporting.
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