Question: A patient comes in for an outpatient EGD with biopsy. While in observation following the procedure, the patient begins complaining of severe chest pain and is taken to the cath lab. A left heart cath 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. What CPT procedure code(s) and sequencing apply?