2nd Question r/e Emergency room CPT coding

So the 99281-99285 CPT codes aren't necessarily ONLY for the doctors employed by the ER dept.? These codes can be used by on call physicians coming to see a patient in the emergency dept.?

Absolutely

As long as the patient is not admitted, the primary care doc or on call can code an ED visit. It should not be used for convenience visits (meet me at the ER to look at that sore throat) but rather patients who self-refer to the ED and the non-ED doc sees the patient for the initial eval and treatment.