Hypertrophy of bone, right fibula

This code signifies an abnormal enlargement or overgrowth of the bone tissue specifically affecting the right fibula. This hypertrophy is a non-neoplastic increase in the size of the bone, often due to increased stress or a reactive process.

Apply this code when documentation clearly states hypertrophy of the right fibula. This may be seen in imaging reports (X-ray, CT, MRI) or physician notes describing a thickened or enlarged fibula on the right side. It is appropriate for conditions like Paget's disease affecting the fibula, or reactive bone changes.

• Ensure laterality is explicitly documented as "right fibula" to support this specific code.
• Distinguish from bone spurs (osteophytes) or exostoses, which have different ICD-10-CM codes.
• Code any underlying cause of the hypertrophy, such as Paget's disease, as a primary diagnosis if applicable.