ICD-10 Code G57.82 – Other specified mononeuropathies of left lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G57.82 – Other specified mononeuropathies of left lower limb
What it is
This code identifies a single nerve disorder affecting the left lower limb that does not fit a more specific mononeuropathy category. Use it when the documentation names an unusual or specified left-leg nerve problem.
Clinical signs
Clinical features vary; refer to documentation. Typical findings in mononeuropathy include localized pain, numbness, tingling, weakness, or sensory loss in the distribution of one affected nerve.
When to use this code
Use G57.82 when the clinician documents a specified mononeuropathy of the left lower limb and no more precise ICD-10-CM code applies. It may also fit cases described by a named nerve lesion or focal neuropathy in the left leg. Check documentation for laterality and nerve specificity before assigning the code.
Do not use for
Do not use this code for generalized peripheral neuropathy, radiculopathy, or bilateral lower-limb nerve disorders. If the record identifies a more specific mononeuropathy code, use that instead.
Coding tip
Confirm the affected side and the exact nerve involved; if the note is vague, query for clarification before coding.