Solitary bone cyst, right tibia and fibula

This code signifies the presence of a solitary bone cyst, also known as a simple or unicameral bone cyst, located specifically in the right tibia and/or fibula. These are benign, fluid-filled lesions that typically occur in the metaphysis of long bones, often discovered incidentally or after a pathological fracture.

Apply this code when documentation confirms a diagnosis of a solitary bone cyst affecting the right lower leg bones. This diagnosis is typically supported by imaging studies (e.g., X-ray, MRI) showing a well-defined, lucent lesion, and potentially a biopsy confirming its benign nature.

• Ensure laterality is clearly documented as "right" to support this specific code.
• Distinguish from other benign bone tumors or tumor-like lesions; this code is specific to solitary bone cysts.
• If a pathological fracture is associated with the cyst, code the fracture first, followed by this code as a secondary diagnosis.