ICD-10-CM > G00-G99 > G50-G59 > G56 > G56.3 G56.3 Lesion of radial nerve Non-Billable/Non-Specific Codes G56.30Lesion of radial nerve, unspecified upper limbG56.31Lesion of radial nerve, right upper limbG56.32Lesion of radial nerve, left upper limbG56.33Lesion of radial nerve, bilateral upper limbs