ICD-10 Code G57.71 – Causalgia of right lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G57.71 – Causalgia of right lower limb
What it is
Causalgia of the right lower limb refers to a chronic neuropathic pain syndrome affecting the right leg or foot after nerve injury. It is typically associated with burning pain and abnormal sensitivity in the affected limb.
Clinical signs
Common findings include severe burning pain, allodynia, and hyperalgesia in the right lower limb. Clinical features vary; refer to documentation for any associated swelling, color change, temperature change, or movement limitation.
When to use this code
Use G57.71 when the record clearly identifies causalgia in the right lower limb, especially after trauma, surgery, or another nerve insult. Documented laterality matters, so this code is specific to the right side. If the note describes complex regional pain syndrome instead, confirm the exact diagnosis before coding.
Do not use for
Do not use this code for nonspecific leg pain, sciatica, or pain without documented causalgia. Check documentation if the condition is bilateral, left-sided, or recorded under a different neuropathic pain diagnosis.
Coding tip
Verify laterality and the exact term “causalgia” in the provider note before assigning G57.71.