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G56.42

Billable

Causalgia of left upper limb

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A condition causing burning pain in the left arm and hand, typically resulting from nerve injury or damage. This is a type of chronic pain syndrome affecting the upper limb.

Coding Tips

  • •Causalgia is a specific type of complex regional pain syndrome (CRPS); ensure the diagnosis clearly documents this condition rather than general neuropathy
  • •Verify laterality is documented as left upper limb to support the .42 specificity

Code Hierarchy

└G56Mononeuropathies of upper limb└G56.4Causalgia of upper limb└G56.42Causalgia of left upper limb
└G56.42Causalgia of left upper limb

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