Versions of Florida Regulations 64B9-4.020: Autonomous Advanced Practice Registered Nurse (APRN) Registration. on LawServer 2024 Florida Regulations 64B9-4.020: Autonomous Advanced Practice Registered Nurse (APRN) Registration. 2023 Florida Regulations 64B9-4.020: Autonomous Advanced Practice Registered Nurse (APRN) Registration. 2023 Florida Regulations 64B9-4.020: Autonomous Advanced Practice Registered Nurse (APRN) Registration. 2022 Florida Regulations 64B9-4.020: Autonomous Advanced Practice Registered Nurse (APRN) Registration. 2021 Florida Regulations 64B9-4.020: Autonomous Advanced Practice Registered Nurse (APRN) Registration. 2020 Florida Regulations 64B9-4.020: Autonomous Advanced Practice Registered Nurse (APRN) Registration.