G56.4
Causalgia of upper limb
Applicable To
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Complex regional pain syndrome II of upper limb
Clinical Information
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A complex regional pain syndrome characterized by burning pain and marked sensitivity to touch hyperesthesia) in the distribution of an injured peripheral nerve. Autonomic dysfunction in the form of sudomotor i.e., sympathetic innervation to sweat glands), vasomotor, and trophic skin changes may also occur. Adams et al., Principles of Neurology, 6th ed, p1359)
Details
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G56.4 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
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The 2023 edition of ICD-10-CM G56.4 became effective on October 1, 2022.
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This is the American ICD-10-CM version of G56.4 – other international versions of ICD-10 G56.4 may differ.