G57.70
BillableCausalgia of unspecified lower limb
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Causalgia is a severe burning pain that develops after an injury to a nerve in the lower leg or foot, even after the initial injury has healed. This code is used when the specific leg (left or right) is not documented.
Coding Tips
- •If documentation specifies left or right lower limb, use G57.71 (right) or G57.72 (left) instead of the unspecified code G57.70
- •Causalgia is a type of complex regional pain syndrome (CRPS); ensure the diagnosis is clearly documented as causalgia and not confused with other neuropathic pain conditions
Code Hierarchy
└G57Mononeuropathies of lower limb└G57.7Causalgia of lower limb└G57.70Causalgia of unspecified lower limb
└G57.70Causalgia of unspecified lower limb