Final answer:
If a physician dies after prescribing an Rx, the prescription remains valid and can still be dispensed to the patient.
Step-by-step explanation:
If a physician dies after they have already prescribed a medication (Rx), the prescription would still remain valid and could be dispensed to the patient. The death of the physician does not negate the legality or efficacy of the prescription. However, in such cases, it may be necessary for another physician to review the prescription and ensure its appropriateness, especially if there are any concerns or doubts.