Other bursal cyst, left ankle and foot

This code signifies the presence of a fluid-filled sac (bursal cyst) located in the left ankle or foot region, excluding those specifically identified as Baker's cysts or other specified types. These cysts typically arise from inflammation or trauma to a bursa, a small sac that cushions tendons and bones.

Use this code when documentation clearly identifies a bursal cyst in the left ankle or foot, and the provider has not specified a more precise type of bursal cyst (e.g., prepatellar, olecranon). Supporting documentation should include imaging reports (ultrasound, MRI) confirming the cyst and its location, or a physician's diagnostic statement.

• Ensure laterality is accurately documented and coded; this code is specific to the left side.
• Differentiate from ganglion cysts (M67.4-) which are distinct in origin and often arise from joint capsules or tendon sheaths.
• Avoid using this code if a more specific bursal cyst diagnosis (e.g., Baker's cyst) is documented, as those have their own dedicated codes.