Solitary bone cyst, left ankle and foot

This code signifies the presence of a single, benign, fluid-filled or fibrous lesion within the bone structure of the patient's left ankle or foot. These cysts are typically asymptomatic but can sometimes cause pain or pathological fractures.

Assign this code when documentation clearly identifies a solitary bone cyst located specifically in the left ankle or foot. This diagnosis is often confirmed through imaging studies such as X-rays, MRI, or CT scans, which will describe the lesion's characteristics and location.

• Ensure the documentation specifies "solitary" to differentiate from multiple bone cysts.
• Verify the laterality is explicitly stated as "left" and the anatomical site is "ankle and foot."
• Do not use this code for aneurysmal bone cysts or other specified types of bone cysts; specific codes exist for those conditions.