The Nuclear Medicine Clarification Act of 2025 aims to enhance patient safety by requiring the Nuclear Regulatory Commission (NRC) to update its regulations regarding unintended radiation exposure during nuclear medicine procedures. This legislative action is designed to provide greater protection for individuals undergoing these medical treatments. Specifically, the bill mandates the NRC to amend section 35.3045(a)(1) of title 10, Code of Federal Regulations, to expand the definition of reportable medical events. This revision will include instances where a patient experiences a radiation dose due to an extravasation that exceeds either 0.5 Sv (50 rem) dose equivalent to 5 cubic centimeters of tissue or 0.5 Sv (50 rem) shallow dose equivalent to 10 square centimeters of skin. The NRC is required to complete this regulatory revision within 120 days of the Act's enactment. The updated regulations will then become effective 18 months after the date of enactment, ensuring a clear timeline for implementation and compliance.