Which code corresponds to anesthesia services for replacement of pacing cardioverter-defibrillator in a 68-year-old male with severe sick-sinus syndrome?

• A. 00520-P1
• B. 00918-P1
• C. 00534-P3
• D. 00944-P1

Answer: (C)

The key idea is selecting the anesthesia code that matches a generator replacement for an implanted cardiac device, using the patient’s ASA physical status as the modifier. Replacing the pacing/defibrillator generator is coded separately from lead procedures, and the appropriate code in this range is used for generator replacement. The patient’s severe systemic disease category corresponds to ASA physical status 3, so the correct entry is the generator-replacement code with the P3 modifier: 00534-P3.

This is why other codes aren’t as appropriate: they would correspond to different procedures (for example, insertion or revision involving leads or other cardiac procedures) or would carry a different ASA status modifier that doesn’t reflect the patient’s condition for this specific generator replacement.