ICD-10 Code G57.32 – Lesion of lateral popliteal nerve, left lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G57.32 – Lesion of lateral popliteal nerve, left lower limb
What it is
G57.32 identifies a disorder of the left lateral popliteal nerve, also called the common peroneal nerve. Use it when documentation states a lesion, injury, or neuropathy affecting that nerve in the left lower limb.
Clinical signs
Typical findings include pain, numbness, tingling, or weakness along the lateral leg and top of the foot. Foot drop or difficulty dorsiflexing the foot may be noted; clinical features vary, refer to documentation.
When to use this code
Use this code when the provider documents a lesion of the lateral popliteal nerve on the left side, whether from compression, trauma, or another specified cause. It may also fit notes describing left common peroneal neuropathy with clear laterality. Check documentation if the record only says “peroneal neuropathy” without side or anatomic detail.
Do not use for
Do not use G57.32 for right-sided, bilateral, or unspecified peroneal nerve lesions. Do not use it when the problem is a more general foot drop or leg pain without documentation linking it to the left lateral popliteal nerve.
Coding tip
Confirm left-sided nerve involvement in the assessment, impression, or operative note before assigning G57.32.