Diagnostic Code 8525 · 38 CFR §4.124a
The posterior tibial nerve is the continuation of the tibial nerve as it passes behind your inner ankle bone through an area called the tarsal tunnel. It provides sensation to the bottom of your foot and controls some of the small muscles in your foot that help maintain your arch. Compression or damage at this location is called tarsal tunnel syndrome. Veterans may develop this from ankle fractures, flat feet that developed or worsened during service, prolonged standing and marching, ankle sprains, or swelling from other service-connected injuries in the ankle area.
| Rating | Criteria |
|---|---|
| 30% | |
| 20% | |
| 10% |
Medical records documenting posterior tibial nerve compression or damage linked to service, Nerve conduction studies testing the tibial nerve at the tarsal tunnel, Documentation of symptoms including burning, numbness, or tingling on the sole, Records of treatment attempts such as orthotics, injections, or surgery, Evidence of the service-connected cause such as ankle injury or flat feet