It depends on the advantage plan. I work at an FQHC, and we have to split the claims for Humana, Wellcare and UHC Dual Complete. Basically anything that gets billed on a UB, gets split. there are a few Medicare advantage plans that for some reason go on HCFA's, and those don't split. For the ones that do split, we put the E/M and G code on the UB, under POS 50, and the labs/radiology gon on the HCFA, under POS 11. Hope that helps!