ICD-10-CM > G00-G99 > G50-G59 > G56 > G56.8 G56.8 Other specified mononeuropathies of upper limb Non-Billable/Non-Specific Applicable To Interdigital neuroma of upper limb Codes G56.80Other 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 limbs