ICD-10 Code G57.00 – Lesion of sciatic nerve, unspecified lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G57.00 – Lesion of sciatic nerve, unspecified lower limb
What it is
G57.00 identifies a disorder of the sciatic nerve in an unspecified lower limb. Use it when documentation states a sciatic nerve lesion but does not specify the side.
Clinical signs
Typical findings include pain, numbness, tingling, or weakness along the sciatic nerve distribution. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents a sciatic nerve lesion affecting a lower limb, but laterality is not stated. It may also fit nonspecific notes describing sciatic neuropathy, sciatica-related nerve injury, or similar wording without a right- or left-side designation.
Do not use for
Do not use it if the record identifies the right or left lower limb, since a more specific code is available. Check documentation before assigning it for back pain or general sciatica without confirmed sciatic nerve lesion.
Coding tip
Always look for laterality in the assessment, imaging, or procedure note before selecting the unspecified code.