Question: Maine Subscriber Answer: Make sure you add modifier 59 (Distinct procedural service) to codes 93555-26 (Imaging supervision, interpretation and report for injection procedure[s] during cardiac catheterization; ventricular and/or atrial angiograph; professional component) and 93556-26 (... pulmonary angiography, aortography, and/or selective coronary angiography including venous bypass grafts and arterial conduits [whether native or used in bypass]) whenever you're reporting 92980. Otherwise your carrier will deny these services. Also, in rare cases, some carriers will require modifier 59 on 93545 (Injection procedure during cardiac catheterization; for selective coronary angiography [injection of radiopaque material may be by hand]). Don't forget: When you report the stent, you should use anatomical modifiers LC (Left circumflex or LCX), RC (Right coronary or RCA) or LD (Left anterior descending or LAD).