I work for a orthopaedic physician practice that has multiple therapy location. We have been receiving denials from Medicaid for all of crossover claims. The denial reasons vary, but the most frequent ones are - 4802 (no contract for billed diagnosis and 4801 (services cannot be billed on this claim form or provider type listed for this provider number cannot file this type of claim). Our physical therapists are credentialed under COS (category of service) 410 and our occupational therapists are credentialed under COS 420. We rarely get rarely get paid by Medicaid. I have searched the GAMMIS portal and can't find a manual for therapy claims processing and no Medicaid representative can provide me with any help either. Essentially, I want to know can we get reimbursed by Medicaid and if we can, how do we go about it? If any one can provide any insight on where to go to find the answer I would greatly appreciate it.