a. For On/After October 1, 2015 date of service (DOS) Use ICD-10 code on both PM160/CHDP and CMS-1500 (HCFA) forms. b. Before October 1, 2015 date of service (DOS) use ICD-9 code on both PM160/CHDP and CMS-1500 (HCFA) form. 2. CHDPGateway Portal is Powered by PM160 end...