Prospective, quality-improvement. To evaluate pain management following posterior spinal fusion (PSF) for adolescent idiopathic scoliosis (AIS) and Scheuermann's Kyphosis (SK) determine the optimal opioid and benzodiazepine prescription amounts, and implement a multimodal post-operative pain regimen. The incidence of prescription opioid abuse is increasing in the United States. Orthopedic spine surgeons often prescribe large quantities of opioids post-operatively for pain control. Previous efforts on pain control have focused on in-patient post-operative regimens after PSF. Between 2/1/17 and 5/30/18 patients with AIS or SK were sent home with pain diaries after discharge to document daily narcotic, benzodiazepine, non-steroidal anti-inflammatory drugs (NSAIDs), acetaminophen and gabapentin use following PSF. Diaries were collected at the 4week post-operative visit. Data from two cohorts were reviewed: pre-intervention and post-intervention. Our prescription intervention went into effect 9/1/17. Twenty-four (30%) patients returned pain diaries. The pre-intervention cohort consisted of 12 patients (7 female; 5 males; 14.9years (range 12-19)). Patients were prescribed on average 80 × 5mg tabs (26-140) of oxycodone but used on average 45 tabs (12-129) over an average of 17.5days (9-33). They were prescribed an average of 30 × 2mg tabs (0-150) of diazepam, used on average 4.8 (0-105) tabs over 12.5 (5-25) days. The post-intervention cohort consists of 12 patients (9 female; 3 male; 14.8years (12-19)). They were prescribed on average 50 × 5mg tabs (35-80) of oxycodone, used 20.5 (0-39.5) tabs over 8.5days (3-16). They were prescribed on average 18 × 2mg tabs of diazepam (0-43), used 5.4 tabs (0-19) over 10days (5-14). This analysis has directly impacted clinical practice. Prescribed opioid and benzodiazepine doses have been decreased by over 50%, and more resources are being directed towards determining the disparity between the amount of medications prescribed and consumed in our post-operative patients.