I need to double ck myself of what I am reading today my new CPT 2011 book finally arrived I do billing for occupational medicine Indiana workers comp now it states for 12001 thru 12018 global period 000 highlighted in red ink (medicare only) but does that apply for all commerical payors I know YYY stands for carrier determines and i cant find that listed anywhere in those codes so i need to verify i'm reading and understanding this correctly thank you Melissa