Table 1.

Comparison of 2016 and 2017 CPT^® codes/patient day by department

Annualized proportion of CPT® codes/patient day
Department	No. of CPT codes (2016)	No. of CPT codes (2017)	No. of patient days (2016)	No. of patient days (2017)	Proportion 1 (2016)	Proportion 2 (2017)	% change	p value
ED	76,323	79,413	114,798	117,075	0.66	0.68	2.0	< 0.0001
Non-ED	46,376	61,100	159,900	164,452	0.29	0.37	28.1	< 0.0001
Total	122,699	140,513	274,698	281,527	0.45	0.50	11.7	< 0.0001

CPT current procedural terminology, ED emergency department