M87.364

HCC Category Mapping

What This Code Means

Death of bone tissue in the right smaller bone of the lower leg (fibula) caused by an underlying condition or treatment, which may cause lateral leg pain.

Coding Tips

• •Fibular osteonecrosis is rare; ensure documentation clearly supports this specific location
• •Confirm right side is documented and investigate the underlying etiology

Clinical Significance

This diagnosis represents secondary osteonecrosis of the right fibula caused by underlying conditions, which may cause lateral leg pain and potentially affect ankle stability. It requires management of the underlying cause and monitoring for progression.

Documentation Requirements

• ✓Documentation of osteonecrosis affecting right fibula
• ✓Identification of underlying cause (e.g., corticosteroid use, radiation therapy, sickle cell disease)
• ✓Imaging findings confirming fibular bone necrosis (MRI, X-ray, CT)
• ✓Clinical symptoms such as lateral leg pain or ankle instability
• ✓Specific location within fibula (proximal, mid-shaft, distal)
• ✓Functional impact on walking or weight-bearing
• ✓Duration and progression of condition
• ✓Treatment history and response to interventions

Commonly Confused Codes