We have started using hcfa forms in the event the pt can't give up their frames for the lab to process. This is what eyemed recommended?? :( they are asking for modifier codes? They range from U1 to U5,also ua, ub, and uc? Anyone have any idea what these are for? We will probably find out when they seems us the check or denial?? They are using them for photochromic s, tint, prism,. We are curious about reimbursement doing it this way, find out soon. I'll share experience to those interested.