Percentage of patients 18 years or older suffering from a back injury who achieve the Minimal Clinically Important Difference (MCID) in the MDQ or PROMIS Pain Interference, or like mapped measure during the performance year. Additionally, a risk-adjusted MCID proportional difference determined by calculating the difference between the risk model predicted and observed MCID proportion will be reported for each PT/OT/MSK Provider/Group. The risk adjustment will be calculated using a logistic regression model using: baseline function score, baseline pain score, age, sex, payer, surgical status, and symptom duration (time from surgery or symptom onset to baseline physical therapy visit) as well as instrument tool used. These measures will serve as a PT/OT/MSK Provider performance measure at the eligible PT/OT/MSK Provider or group level. This measure will include one rate: 1) The overall performance rate of non-surgical and surgical patients who achieve the MCID in MDQ/PROMIS Pain Interference/or like mapped measure.