ICD-10 Code G56.83 – Other specified mononeuropathies of bilateral upper limbs (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G56.83 – Other specified mononeuropathies of bilateral upper limbs
What it is
Use this code for a documented mononeuropathy affecting both upper limbs when the condition does not fit a more specific ICD-10-CM category. It indicates a peripheral nerve disorder limited to the arms or hands, with bilateral involvement.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include numbness, tingling, pain, weakness, or reduced sensation in both upper extremities, depending on the nerve involved and the clinician’s recorded diagnosis.
When to use this code
Use G56.83 when the provider documents a specified mononeuropathy in both upper limbs and no more specific code is available. It may apply when the affected nerve or exact pattern is described, but the condition is not otherwise classified. Check documentation if laterality or nerve site is unclear.
Do not use for
Do not use this code for generalized polyneuropathy, cervical radiculopathy, or a single-limb mononeuropathy. If the record supports a more specific bilateral upper-limb nerve disorder, code that diagnosis instead.
Coding tip
Verify that the documentation supports bilateral upper-limb involvement and that no more specific mononeuropathy code applies before assigning G56.83.