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G56.43

Billable

Causalgia of bilateral upper limbs

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, typically in the upper arms or hands on both sides of the body. This condition involves abnormal nerve signaling that causes intense pain, swelling, and changes in skin color or temperature.

Coding Tips

  • •Verify that the causalgia affects BOTH upper limbs before assigning this bilateral code; if only one side is affected, use the unilateral code (G56.4-) instead
  • •Document the underlying nerve injury or trauma that triggered the causalgia, as this may require an additional code to fully capture the clinical picture

Code Hierarchy

└G56Mononeuropathies of upper limb└G56.4Causalgia of upper limb└G56.43Causalgia of bilateral upper limbs
└G56.43Causalgia of bilateral upper limbs

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