Medication Management - Is there a diagnosis code

Is there a diagnosis code for Medication Management?

For example, my provider sees patients with ADHD/ADD, behavioral concerns, etc. every few months that are on medications. The reason for the visit is for management of their medications, to be sure that the child is doing ok with school work, sleeping, eating, etc. He also has them do an EKG. What diagnosis code should be used? He keeps writing Medication Management.

Thanks for any help!!
Hollie Garrett, CPC, CPEDC