Tarsal tunnel syndrome, bilateral lower limbs

This code signifies a compressive neuropathy affecting the posterior tibial nerve or its branches as it passes through the tarsal tunnel in both ankles. Patients typically experience pain, numbness, and tingling in the sole of the foot and toes, often exacerbated by activity.

Apply this code when documentation clearly indicates a diagnosis of tarsal tunnel syndrome affecting both the left and right lower limbs. Supporting documentation should include physical exam findings (e.g., Tinel's sign at the ankle), nerve conduction studies, or electromyography confirming bilateral nerve entrapment.

• Ensure the physician's documentation explicitly states "bilateral" or specifies involvement of both the left and right lower limbs.
• Do not use this code if only one limb is affected; instead, select the appropriate laterality code (G57.51 for right, G57.52 for left).
• Consider co-reporting with codes for underlying conditions contributing to the compression, such as ankle fractures or tenosynovitis, if documented.