ICD-10 Code G57.02 – Lesion of sciatic nerve, left lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G57.02 – Lesion of sciatic nerve, left lower limb
What it is
This code identifies a disorder of the left sciatic nerve, usually meaning injury, compression, or other damage affecting nerve function in the left lower limb. It is used when the documentation specifies the left side.
Clinical signs
Typical findings include pain, numbness, tingling, or weakness along the sciatic nerve distribution. Clinical features vary; refer to documentation for the exact nerve involvement and laterality.
When to use this code
Use G57.02 when the provider documents a lesion, neuropathy, or other sciatic nerve disorder limited to the left lower limb. Apply it when the record clearly identifies the left side and the diagnosis is not better described by another condition.
If the note only says “sciatica” or gives nonspecific leg pain, check documentation before coding. Confirm whether the condition is truly a sciatic nerve lesion and whether another code is more appropriate.
Do not use for
Do not use this code for right-sided or bilateral sciatic nerve disorders. Do not assign it for nonspecific back pain, hip pain, or symptoms without documentation of a sciatic nerve lesion.
Coding tip
Verify laterality and the exact provider wording before assigning G57.02.