As of January 1, 2021, there will be significant changes to the office and outpatient Evaluation and Management (E&M) services (CPT ® codes 99202-99215) for both new and established patients. Practices, physicians, and staff must be aware of the modifications to ensure a successful transition next year and avoid any reimbursement disruption. Their clinical documentation systems (EHR systems) need to be adjusted accordingly as per the 2021 E&M changes.