ICD-10-CM > G00-G99 > G50-G59 > G57 > G57.4 G57.4 Lesion of medial popliteal nerve Non-Billable/Non-Specific Codes G57.40Lesion of medial popliteal nerve, unspecified lower limbG57.41Lesion of medial popliteal nerve, right lower limbG57.42Lesion of medial popliteal nerve, left lower limbG57.43Lesion of medial popliteal nerve, bilateral lower limbs