Hypertrophy of bone, left fibula

This code indicates an abnormal increase in the size of the bone tissue of the left fibula. This hypertrophy can result from various factors, including chronic stress, trauma, or underlying metabolic conditions, leading to thickening and increased density of the bone.

Apply this code when documentation explicitly states hypertrophy of the left fibula. This typically occurs in patients presenting with localized pain, swelling, or palpable enlargement of the lower leg, and is often confirmed by imaging studies such as X-rays, CT scans, or MRI.

• Ensure laterality is clearly documented as "left fibula" to support this specific code.
• Distinguish from bone spurs (osteophytes) or bone tumors, which have different ICD-10-CM codes.
• Look for associated conditions or causes of the hypertrophy, such as chronic osteomyelitis or stress fractures, and code them additionally if present.