Lesion of medial popliteal nerve, unspecified lower limb

This code signifies damage or dysfunction of the medial popliteal nerve (tibial nerve) in an unspecified lower limb. This nerve is responsible for innervating the posterior compartment of the leg and the sole of the foot, affecting plantarflexion, inversion, and sensation.

Use this code when documentation indicates a lesion or neuropathy of the medial popliteal nerve, but the specific cause (e.g., compression, trauma, entrapment) is not identified. This code is appropriate when the affected lower limb is not specified in the medical record.

• Ensure the documentation clearly states "medial popliteal nerve" or "tibial nerve" and that the laterality is unspecified.
• Avoid using this code if a more specific cause or location of the nerve lesion is documented (e.g., G57.0- for sciatic nerve lesion).
• Query the provider for laterality (right, left, bilateral) if not specified, as more specific codes exist.