Nuclear Medicine Clarification Act of 2023

This bill clarifies when accidental radiation exposure during nuclear medicine procedures must be reported. It requires the Nuclear Regulatory Commission to revise regulations to specify that unintended irradiation from extravasation (leakage of radioactive material) must be reported if it exceeds 0.5 Sv (50 rem) to either 5 cubic centimeters of tissue or 10 square centimeters of skin. This directly affects hospitals and clinics performing nuclear medicine treatments using radioactive materials. The change sets clear, measurable thresholds for mandatory reporting, replacing ambiguous prior standards. The revised rule takes effect 18 months after the bill's enactment.