MUCHOW, Ryan; WISKERCHEN, Sarah. 2021 Changes in E/M Codes for Office-Based Practice: JPOSNA Coding Corner. Journal of the Pediatric Orthopaedic Society of North America, [S. l.], v. 3, n. 1, 2021. DOI: 10.55275/JPOSNA-2021-226. Disponível em: https://jposna.org/index.php/jposna/article/view/226. Acesso em: 23 apr. 2026.