ICD-10 Code G56.13 – Other lesions of median nerve, bilateral upper limbs (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G56.13 – Other lesions of median nerve, bilateral upper limbs
What it is
This code identifies a non-specific disorder affecting both median nerves in the upper limbs. Use it when documentation states other median nerve lesions and does not describe a more specific named condition.
Clinical signs
Clinical features may include numbness, tingling, pain, or weakness in the median nerve distribution. Findings vary; refer to documentation for the exact nerve lesion and whether both upper limbs are involved.
When to use this code
Use G56.13 when the provider documents bilateral median nerve lesions and no more specific diagnosis is available. It may fit cases described as other median neuropathy, unspecified lesion, or similar wording affecting both sides. Check documentation if the record suggests entrapment, trauma, or another named disorder.
Do not use for
Do not use this code for carpal tunnel syndrome or other clearly identified median nerve conditions with their own codes. Also avoid it when only one upper limb is involved or when documentation is too vague.
Coding tip
Confirm bilateral involvement and the exact provider wording before assigning G56.13.