A patient comes in for an outpatient EGD with biopsy. While…

A pаtient cоmes in fоr аn оutpаtient EGD with biopsy. While in recovery following the procedure, the patient begins complaining of severe chest pain and is taken to the cardiac catheterization lab. A left heart catheterization with coronary angiography is performed and a stent is inserted into the left circumflex artery. Additionally, an atherectomy of the left anterior descending artery is performed. The patient is placed in observation overnight and discharged the next day. What CPT procedure code(s), sequencing, and modifiers apply?