By January 1, 2023: Billing team must immediately update billing system to remove deleted codes (0497T, 0498T, 0163T, 43659 for OAGB, 0312T-0317T, G0308, G0309, 99217-99220, 99224-99226, C1841, C1842, C1849, 33240 duplicate, 81403) and add new codes (22860, 43645, 43290, 43291, 0358U, 0743T, 0749T, 0750T, 0781T, 0782T, 0740T, 0741T, A4239, E2103, 0783T, C7509-C7511, 0777T, 0359U, 81441, 81449, 81451, 81456, 81479, 69728-69730, C7537-C7540, 0355U, 0357U, 0361U, 0356U, 81418, 0362U, 0775T, Q4236, Q4262-Q4264). Update encounter forms and notify providers of bariatric surgery code changes and new investigational procedures. Claims using deleted codes after January 1 will be denied.