93644 Ep evaluation subcutaneous implant defibrillator
Also known as: Subcutaneous ICD evaluation, S-ICD check, S-ICD interrogation
Electrophysiology evaluation of subcutaneously implanted implantable cardiovascular defibrillator.
In Plain Language
under-the-skin shock device test; subcutaneous defibrillator check; surface device evaluation
Clinical Context
Assessment of subcutaneously implanted defibrillator function including sensing, pacing capability, and defibrillation threshold. Growing modality avoiding transvenous lead complications.
RVU Breakdown
| Work RVU | 2.96 |
| Total RVU | 2.96 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
Medicine section codes cover a wide range of non-surgical services. This code has a 0-day global period, meaning pre- and post-operative E&M visits are billable separately on the same day. Documentation should include the clinical indication, procedure details, interpretation (if applicable), and any patient-specific findings.
How This Code Compares
With a work RVU of 2.96, this code ranks in the 86th percentile among Medicine codes — 3.8x the median (0.78). The highest wRVU in this category is 23.92.
Specialties
Frequently Asked Questions
What is CPT code 93644?
CPT 93644 (Ep evaluation subcutaneous implant defibrillator) is a Medicine code. Electrophysiology evaluation of subcutaneously implanted implantable cardiovascular defibrillator.
Who uses CPT code 93644?
CPT 93644 is used by Cardiology, Electrophysiology, Internal Medicine. Assessment of subcutaneously implanted defibrillator function including sensing, pacing capability, and defibrillation threshold. Growing modality avoiding transvenous lead complications.
When is CPT 93644 used?
Assessment of subcutaneously implanted defibrillator function including sensing, pacing capability, and defibrillation threshold. Growing modality avoiding transvenous lead complications.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.