708.4
ICD-9-CMThis code represents a rare form of physical urticaria characterized by the development of transient, itchy wheals and angioedema in response to vibratory stimuli. Symptoms typically appear within minutes of exposure and resolve within an hour. It is a localized reaction to mechanical vibration.
Apply this code when documentation clearly indicates a diagnosis of urticaria specifically triggered by vibration. This includes cases where patients experience itching, redness, and swelling after exposure to vibrating tools, machinery, or even vigorous toweling. Supporting documentation should detail the vibratory trigger and the characteristic skin reaction.
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