Lesion of medial popliteal nerve

This code signifies a pathological alteration or injury affecting the medial popliteal nerve, also known as the tibial nerve. This nerve is a major branch of the sciatic nerve, responsible for innervating muscles in the posterior leg and foot, and providing sensation to the sole of the foot. A lesion can manifest as neuropathy, compression, or trauma.

Use this code when documentation specifies a lesion, injury, or dysfunction directly impacting the medial popliteal (tibial) nerve. This includes conditions like tibial nerve entrapment, neuropathy, or damage from trauma or surgical procedures. Supporting documentation should clearly identify the affected nerve as the medial popliteal or tibial nerve.

• Differentiate from lesions of the common peroneal nerve (lateral popliteal nerve), which has distinct innervation patterns.
• Specify the underlying cause of the lesion if known and documented, using an additional code (e.g., trauma, diabetes).
• Ensure documentation explicitly states "medial popliteal nerve" or "tibial nerve" to avoid confusion with other lower extremity nerve lesions.