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G213
G213 – Physical urticaria challenges
OHIP Diagnostic and Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
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
The service must include at least 3 of the specified challenges. The type of challenges performed and their results must be documented in the patient's medical record.
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