ICD-10 Code G57.5 – Tarsal tunnel syndrome (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G57.5 – Tarsal tunnel syndrome
What it is
G57.5 identifies tarsal tunnel syndrome, a compression neuropathy of the posterior tibial nerve or its branches at the ankle. Use it when documentation states nerve entrapment in the tarsal tunnel.
Clinical signs
Typical findings include burning, tingling, numbness, or pain along the sole of the foot and toes, often worse with standing or walking. Clinical features vary; refer to documentation.
When to use this code
Assign this code when the provider documents tarsal tunnel syndrome, posterior tibial nerve entrapment, or similar wording. Use it for confirmed clinical diagnoses, specialist assessments, or imaging and exam-supported notes that clearly identify the syndrome. Check documentation if the record only mentions nonspecific foot pain.
Do not use for
Do not use G57.5 for generalized neuropathy, plantar fasciitis, or ankle pain without nerve entrapment. If the diagnosis is uncertain or another nerve disorder is documented, code that condition instead.
Coding tip
Capture the exact nerve entrapment diagnosis from the provider note; vague heel or foot pain usually needs further documentation.