<h3>BACKGROUND CONTEXT</h3> Preoperative opioid use in spine patients is associated with adverse patient-reported outcomes, higher rates of perioperative complications, increased postoperative opioid dependence, and greater surgical costs. <h3>PURPOSE</h3> The purpose of this study is to determine whether a structured preoperative opioid tapering regimen can successfully reduce postoperative opioid use and improve outcomes in spinal fusion surgery. <h3>STUDY DESIGN/SETTING</h3> Single center RCT. <h3>PATIENT SAMPLE</h3> To date, 12 patients enrolled (5 control, 7 taper). <h3>OUTCOME MEASURES</h3> Milligram morphine equivalent (MME) opioid use; back and leg numeric pain rating scale (NPRS); PROMIS (depression, anxiety, fatigue, sleep, satisfaction, physical function, pain interference, pain behavior); other medication use; intra- and perioperative outcomes; complications; subjective opiate withdrawal scale (SOWS). <h3>METHODS</h3> Patients undergoing thoracolumbar, lumbar, or lumbosacral spinal fusion surgery and taking opioids daily for 4 weeks prior to the preoperative planning visit were eligible for inclusion (buprenorphine and long-acting formulations excluded). Consenting patients were randomized to undergo a 4-week tapering program (reduction of 10% per week for a total of 40% prior to surgery) or to the control group. Patients were guided through the tapering process via weekly phone calls. Control patients also received weekly phone calls with the same outcomes administered, with the exception of the SOWS. All patients were followed postoperatively with weekly phone calls for 6 weeks, and via their 3- and 6-month postoperative visits. A preliminary analysis of the data to date was performed through data visualization and univariate statistics (a=0.5, SAS v9.4). <h3>RESULTS</h3> Initially, this study was powered conservatively for 78 patients. The COVID pandemic resulted in significant study disruptions and enrollment challenges. Patients, many of whom are seeking surgery for poorly controlled pain, were wary of tapering their opiate use, with the top reasons for study refusal including: (1) pain not well controlled, unwilling to risk randomization, (2) pain well controlled, unwilling to risk randomization, (3) Insufficient time, (4) no response after initial contact, and (5) unresponsive to any contact. For the 12 patients enrolled to date [50% female, median age 68 (range 49–74)]. The breakdown of opioids taken was: hydrocodone/acetaminophen 5 (41%), oxycodone/acetaminophen 3 (25%), tramadol 3 (25%), and oxycodone 1 (8%). All but 2 (16%) of patients used additional pain medications, most commonly acetaminophen (50%) and gabapentin (42%). The median number of levels fused in both groups was 5 (range control: 2-5, range experimental: 2-11). There were no obvious differences in baseline demographics, surgical approach, or analgesia. Total in-hospital MME was a median of 365 (IQR 143-395) for the control group and 295 (IQR: 189-322) for the taper group (p = 0.625). Three (60%) of the control group and 1 (15%) of the taper group required a pain consult (p = 0.222). None of the control group and 4 (57%) of the taper group had perioperative complications (p = 0.081). Control and taper patients had similar baseline NPRS pain; however, the taper group had lower back pain during the taper period (median back pain 1.5 to 6 points lower; p <0.05 for taper weeks 1 & 3; p <0.10 for taper weeks 2 and 4). Postoperative pain did not differ between groups. Visually, trends in leg pain were similar, but the variability was larger. No differences were evident in the PROMIS CATs between groups. During the taper period, none of the tapering patients experienced more than mild withdrawal symptoms. <h3>CONCLUSIONS</h3> Patients are hesitant to participate in preoperative opiate tapering, and the COVID epidemic further exacerbated these anxieties. In those patients who did taper, there is some evidence towards reduced preoperative pain and potentially lower in-hospital MMEs. To date, no differences are evident in postoperative PROMs. Enrollment of additional patients is ongoing, as is the analysis of pre- and postoperative MMEs. <h3>FDA DEVICE/DRUG STATUS</h3> This abstract does not discuss or include any applicable devices or drugs.