On April 5, 2023, the NRC issued a notice of violation (Notice) to Mercy Hospital Joplin (licensee) for one Severity Level (SL) III violation. The violation involved the licensee’s failure to have an authorized user date and sign a written directive before an administration of iodine-131 (I-131) sodium iodide, as required by Title 10 of the Code of Federal Regulations (10 CFR) 35.40(a).