I have been getting ready to take the proficiency exam and came across an article from April 2014 in Healthcare Business Monthly that states that if a provider takes care of an injury initially it is an A but if another provider in another office takes care of it following that definitive treatment that provider would use the D even though it is the first time that provider is seeing him. Now in Boot Camp I was told that the second provider would also be an A because it is the first visit for that injury. Which is the correct way to bill for the second provider A or D?