Skip to content
Dx

ICD-10-CM 2027

ICD-10 code for posterior tibial nerve mononeuritis

G57.5

Tarsal tunnel syndrome

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Mononeuritis › posterior tibial nerve”. Page updated September 29, 2026.

About coding posterior tibial nerve mononeuritis

The ICD-10-CM code for posterior tibial nerve mononeuritis is G57.5 (Tarsal tunnel syndrome).

Within G57 (mononeuropathies of lower limb), G57.5 is specifically for tarsal tunnel syndrome. Related codes cover lesion of sciatic nerve (G57.0), Meralgia paresthetica (G57.1), lesion of femoral nerve (G57.2), lesion of lateral popliteal nerve (G57.3), lesion of medial popliteal nerve (G57.4), lesion of plantar nerve (G57.6), Causalgia of lower limb (G57.7), other specified mononeuropathies of lower limb (G57.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: G57.50 (unspecified lower limb), G57.51 (right lower limb), G57.52 (left lower limb) and G57.53 (bilateral lower limbs).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about posterior tibial nerve mononeuritis ICD-10 codes

What is the ICD-10 code for posterior tibial nerve mononeuritis?

G57.5 — Tarsal tunnel syndrome (a header code; report a more specific subcode).

Is G57.5 billable?

No. G57.5 is a header code. Report one of its more specific subcodes instead.