Fibrous dysplasia (monostotic), right hand

This code signifies a benign, non-hereditary bone disorder characterized by the replacement of normal bone with fibrous tissue and immature woven bone. Specifically, it indicates that this condition affects a single bone (monostotic) located in the patient's right hand. This can lead to bone weakness, deformity, and pain.

Use this code when documentation clearly states a diagnosis of monostotic fibrous dysplasia affecting any bone within the right hand. Supporting documentation would include imaging reports (X-ray, MRI, CT scan) confirming the lesion's presence and location, and potentially a pathology report from a biopsy.

• Ensure documentation specifies "monostotic" and not "polyostotic" fibrous dysplasia, as different codes apply.
• Verify the laterality is explicitly stated as "right hand"; otherwise, an unspecified laterality code may be more appropriate.
• Distinguish from other benign bone tumors or cysts; a definitive diagnosis of fibrous dysplasia is required.