Blue Cross Blue Shield of Kansas City (Blue KC), the covered entity (CE), discovered that an error caused protected health information (PHI) to be mailed to the wrong recipients. This breach affected 725 individuals. The PHI involved included group health plan numbers and member identification numbers. Blue KC notified all affected individuals and media outlets. To prevent future incidents of this nature, Blue KC added quality checks and secondary reviews for all future mailings. The employee was re-trained. OCR obtained assurances that the CE implemented the corrective actions noted above.