Hello @WustlRob,
This thread is a discussion on how we define and differentiate Visits from Care Sites in the OMOP CDM. You should read this thread where I discuss the difficulties in mapping EHR encounters to the OMOP CDM. And please ask any questions there. Also, the Epic User Web has some information and discussion on mapping to OMOP.
In summary: There isn’t a 1:1 mapping between EHR encounter records and OMOP CDM Visit Occurrence / Visit Detail records.