Cardiology Coding Alert

Reader Question:

Capture Codes for 2 PCI Services

Question: The cardiologist performed a PTCA in the LIMA graft to the first diagonal and also placed a stent in the proximal LC. How should I code this?

Michigan Subscriber

Answer: Report PTCA in the LIMA graft to the first diagonal, which is a branch of the left anterior descending (LAD) by appending modifier LD (Left anterior descending coronary artery) to 92937 (Percutaneous transluminal revascularization of or through coronary artery bypass graft [internal mammary, free arterial, venous], any combination of intracoronary stent, atherectomy and angioplasty, including distal protection when performed; single vessel).

Note that 92937 is specific to revascularization involving a bypass graft.

For the stent in the proximal left circumflex, append modifier LC (Left circumflex coronary artery) to 92928 (Percutaneous transcatheter placement of intracoronary stent[s], with coronary angioplasty when performed; single major coronary artery or branch).