Table 1.

Distribution of surgery codes according to the Nordic Classification of Surgical Procedures (NCSP) version 1.15

Procedure code	Procedure	n	%
ABC16	Microsurgical excision of lumbar intervertebral disc displacement	439	29
ABC36	Decompression of lumbar nerve roots	297	20
NAG62	Posterior fusion of lumbar spine with fixation, 2–3 vertebrae	282	19
ABC56	Decompression of lumbar spinal canal and nerve roots	271	18
NAG66	Posterior interbody fusion of lumbar spine, 2 vertebrae	71	5
NAG63	Posterior fusion of lumbar spine with fixation > 3 vertebrae	54	4
ABC66	Decompression of lumbar spinal channel	48	3
ABC26	Open discectomy of lumbar spine	34	2
NAG61	Posterior fusion of lumbar spine without fixation	12	1
ABC07	Percutaneous lumbar endoscopic discectomy	4	0
NAG67	Posterior interbody fusion of lumbar spine > 2 vertebrae	2	0
NAJ32	Posterior reduction of fracture of lumbar spine	1	0