Allergy diagnostic & therapeutic procedures G213 - Physical urticaria challenges

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Physical urticaria challenges - to include at least 3 of the following: a. assessment of dermographic challenge with 100, 250 or 500 gm needle, measuring immediate and delayed responses, b. assessment of pressure challenge with 15 lbs. weight recording onset, peak, duration of response immediate and delayed, c. assessment of ice cube cold challenges, d. assessment of cholinergic exercise challenge with use of treadmill or bicycle to target pulse rate greater or equal to 120 per minute and profuse sweating, e. vibration effect of light and water, f. histamine or methacholine