Childhood overweight and obesity remains prevalent. We sought to identify characteristics associated with correct coding of obese and overweight children ages 2-9 years by pediatric primary care providers (PCPs) in an urban, minority clinic. Samples included electronic health records pre- (n = 262) and post- (n = 244) provider training to implement an intervention aiming to improve consistency in obesity prevention and management guidelines from 15 providers. Analysis included descriptive statistics and simple logistic regression. Child characteristics consistently associated with correct coding in both pre- and post-intervention included children with obese body mass index percentiles (vs. overweight) and older-aged children (vs. toddlers). Provider characteristics were not associated. Improvements in coding overweight and obese children occurred post-intervention, yet many were missed. Knowledge of characteristics associated with missed coding can inform targeted training for PCPs to implement evidence-based obesity guidelines with full fidelity for all families. Copyright © 2018 National Association of Pediatric Nurse Practitioners. Published by Elsevier Inc. All rights reserved.