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Introduction: The ESC/EHRA CRT Survey II collected data on current implantation practice of CRT devices in 42 European countries. This analysis focuses on CRT implantation practice with regard to baseline NYHA functional class. Methods and Results: Between October 2015 and January 2017, 11.088 patients (pts) with an initial implant or upgrade from a previous device were included in the Survey. We analyzed 10848 pts with available data on New York Heart Association (NYHA) heart failure (HF) class. Among these, 370 (3.4%) were in NYHA class I, 4083 (37.6%) in class II, 5909 (54.5%) in class III and 486 (4.5%) in class IV. The table compares clinical data across NYHA classes and shows significant differences with regard to age, gender, etiology, QRS width/morphology and indication. The indication for CRT in NYHA I pts was more often a primary ICD indication for HF or a pacing indication with expected need for ventricular pacing. Implant complications were overall low but higher in NYHA IV pts. Conclusion: Few pts in Europe in NYHA class I receive a CRT system indicating overall good guideline adherence. Most NYHA I pts are implanted for a primary ICD indication or for a PM indication with expected high need for ventricular pacing. [ABSTRACT FROM AUTHOR]