G2145 — Functional status measured by the oswestry disability index (odi version 2.1a) at three months (6 - 20 weeks) postoperatively was greater than 22 and functional status measured by the odi version 2.1a within three months preoperatively and at three months (6 - 20 weeks) postoperatively demonstrated an improvement of less than 30 points

HCPCS/CPT