ICD-10-CM > G00-G99 > G50-G59 > G56 G56 Mononeuropathies of upper limb Non-Billable/Non-Specific Type 1 Excludes current traumatic nerve disorder - see nerve injury by body region Codes G56.0Carpal tunnel syndromeG56.00Carpal tunnel syndrome, unspecified upper limbG56.01Carpal tunnel syndrome, right upper limbG56.02Carpal tunnel syndrome, left upper limbG56.03Carpal tunnel syndrome, bilateral upper limbsG56.1Other lesions of median nerveG56.10Other lesions of median nerve, unspecified upper limbG56.11Other lesions of median nerve, right upper limbG56.12Other lesions of median nerve, left upper limbG56.13Other lesions of median nerve, bilateral upper limbsG56.2Lesion of ulnar nerveG56.20Lesion of ulnar nerve, unspecified upper limbG56.21Lesion of ulnar nerve, right upper limbG56.22Lesion of ulnar nerve, left upper limbG56.23Lesion of ulnar nerve, bilateral upper limbsG56.3Lesion of radial nerveG56.30Lesion 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 limbsG56.4Causalgia of upper limbG56.40Causalgia of unspecified upper limbG56.41Causalgia of right upper limbG56.42Causalgia of left upper limbG56.43Causalgia of bilateral upper limbsG56.8Other specified mononeuropathies of upper limbG56.80Other specified mononeuropathies of unspecified upper limbG56.81Other specified mononeuropathies of right upper limbG56.82Other specified mononeuropathies of left upper limbG56.83Other specified mononeuropathies of bilateral upper limbsG56.9Unspecified mononeuropathy of upper limbG56.90Unspecified mononeuropathy of unspecified upper limbG56.91Unspecified mononeuropathy of right upper limbG56.92Unspecified mononeuropathy of left upper limbG56.93Unspecified mononeuropathy of bilateral upper limbs