initial eval MH and med management

Hi,

I have BCBS claims that are denying for the med management initial eval due to the client has been seen for MH already at our clinic.  While it makes some sense that it is a different type of eval, the claims still deny.  Our taxonomy code is single specialty.  My question is, even if we send the claims with a different taxonomy code for that one provider, will it still deny since our clinic taxonomy is single specialty?  The provider wants us to change our taxonomy to multi specialty but we are unwilling to do that much work.  Has anyone had success getting paid for 2 types of evals?