CG Modifer for RHC Prevenitive

Farmington, MO
Best answers
My question is when is this appropriate and when is it not to use the New CG modifier for a RHC? If I am understanding this correctly the CG would be attached to only the preventive HCPC codes and preventive 99406 and 99407 (codes G0436 and G0437 are no longer existent for tobacco sensation). There seems to be conflicting information on this issue. please review example below.

99213-25 // EM Service
G0438-CG //Initial visit Wellness

and if only a Wellness was done then would this be billed as.....



Thank you for time in reviewing,
we have a conflict in interest here regarding the new guidelines concerning this issue and understanding when it is and when it is not appropriate :p