Medical Uses Licensee Toolkit

This toolkit is designed to help licensees find key information easily. Contact Us to submit medical-related inquiries.

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NRC Discontinued its Recognition of the American Board of Radiology’s Certification Processes for all Certifications Granted After December 31, 2023

The NRC informed American Board of Radiology (ABR) in a letter dated November 16, 2023, that recognition of the board’s certification processes for specialty areas currently listed on the public NRC Web page for Specialty Board Certifications Recognized by NRC Under 10 CFR Part 35 will be discontinued after December 31, 2023.

Information Notice (IN) 23-05, “Discontinuation of the U.S. Nuclear Regulatory Commission’s Recognition of the American Board of Radiology’s Certification Processes” was issued on November 30, 2023. This IN provided information regarding the upcoming discontinuation and the existing training and experience pathways for individuals seeking to become authorized and listed on a medical use radioactive materials license under 10 CFR Part 35, “Medical Use of Byproduct Material.”

On September 12, 2023, the NRC held a public meeting on the ABR decision to eliminate its NRC-recognized certification processes and discontinue or stop issuing ABR certificates with certain designations after December 31, 2023. The NRC staff responded to questions and discussed how affected individuals can apply for authorized individual status. Meeting materials available include the meeting transcriptNRC staff presentation, and meeting summary.

Extension of the Public Comment Period for the Regulatory Basis for the Rulemaking on Rubidium-82 Generators, Emerging Medical Technologies, and Other Medical Use of Byproduct Material

On October 27, 2023, the NRC published a Federal Register notice extending the public comment period for the Regulatory Basis for “Rubidium-82 Generators, Emerging Technologies, and Other Medical Use of Byproduct Material. Comments will now be accepted through December 15, 2023.

The original Federal Register notice was published on July 3, 2023. The original comment period deadline was October 31, 2023. Both FRNs have been posted to under Docket No. NRC-2018-0297. More information about the rulemaking and the public meeting held on August 29, 2023 can be found on the Emerging Medical Technology web page.

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Medical List Server

NRC maintains a medical list server for automatic e-mail notifications of medical-related information, and Federal Register Notices. All interested stakeholders are welcome to subscribe.

For questions concerning the list server, please send an email to:

For questions on the content of the generic communications or Federal Register Notices, please contact the individual(s) listed in the document.

To subscribe or unsubscribe to the Medical List Server, send an email to: with the word “subscribe” or “unsubscribe” in the subject line.

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Reporting Nuclear Medicine Injection Extravasations as Medical Events

The NRC is developing a rule that would amend 10 CFR Part 35 to require that certain nuclear medicine injection extravasations be reported as medical events. Extravasation is the infiltration of injected fluid into the tissue surrounding a vein or artery. For additional information on this rulemaking, including activities, public involvement, and schedule, please see Rulemaking: Reporting Nuclear Medicine Injection Extravasations as Medical Events

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The NRC's regulations are found in Chapter I of Title 10, "Energy," of the Code of Federal Regulations (CFR). Chapter I is divided into Parts 1 through 199. The following parts contain the requirements most relevant to medical use of nuclear materials:

  • Part 19 – Notices, Instructions and Reports to Workers: Inspection and Investigations
  • Part 20 – Standards for Protection Against Radiation
  • Part 21 – Reporting of Defects and Noncompliance
  • Part 30 – Rules of General Applicability to Domestic Licensing of Byproduct Material
  • Part 32 – Specific Domestic Licenses to Manufacture or Transfer Certain Items Containing Byproduct Material
  • Part 33 – Specific Domestic Licenses of Broad Scope for Byproduct Material
  • Part 35 – Medical Use of Byproduct Material
  • Part 37 – Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material
  • Part 40 – Domestic Licensing of Source Material
  • Part 70 – Domestic Licensing of Special Nuclear Material

Supporting information for the regulations and rulemaking activities are found in Background Information for Medical Licensees.

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NUREG-1556; "Consolidated Guidance About Materials Licenses"

  • Volume 5, Rev. 1, Program-Specific Guidance About Self-Shielded Irradiator Licenses
  • Volume 6, Rev. 1, Program-Specific Guidance About 10 CFR Part 36 Irradiator Licenses
  • Volume 7, Rev. 1, Program-Specific Guidance About Academic, Research and Development, and Other Licenses of Limited Scope, Including Electron Capture Devices and X-Ray Fluorescence Analyzers
  • Volume 9, Rev. 3, Program-Specific Guidance About Medical Use Licenses
  • Volume 10, Rev. 1, Program-Specific Guidance About Master Materials Licenses
  • Volume 11, Program-Specific Guidance About Licenses of Broad Scope
  • Volume 13, Revision 2, Program-Specific Guidance About Commercial Radiopharmacy Licenses
  • Volume 17, Rev. 1, Program-Specific Guidance About Licenses for Special Nuclear Material of Less than Critical Mass
  • Volume 21, Program-Specific Guidance About Possession Licenses for Production of Radioactive Material Using an Accelerator

NUREG-2155, "Implementation Guidance for 10 CFR Part 37, "Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material"

NUREG-2166, "Physical Security Best Practices for the Protection of Risk-Significant Radioactive Material"

NUREG/CR-6345; Radiation Dose Estimates for Radiopharmaceuticals

To understand the basis for the NRC's medical-use regulations, background information can be found in the Federal Register Notices Related to Medical Licensees.

Regulatory Guides (RGs) are issued in 10 divisions and are intended to aid licensees in implementing regulations. The RGs most applicable to medical use can be found in Medical, Industrial, Academic Uses of Nuclear Materials Regulations, Guidance, and Communications.

Generic Communcations

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Inspection Procedures

NRC’s regional offices (Region I – East, Region III – Midwest, and Region IV – West/Southwest) typically conduct unannounced, periodic inspection of licensed activities using guidance from NRC's Inspection Manual, Chapter 2800. The frequency of inspection is based on the hazard of materials used. More information can be found on Inspection of Medical, Industrial, and Academic Uses of Nuclear Material. The following Inspection Procedures are directly related to medical use.

  • IP 87130 – Nuclear Medicine Programs, Written Directive Not Required
  • IP 87131 – Nuclear Medicine Programs, Written Directive Required
  • IP 87132 – Brachytherapy Programs
  • IP 87133 – Medical Gamma Stereotactic Radiosurgery and Teletherapy Programs
  • IP 87134 – Medical Broad-Scope Programs

Inspection Reports

Records of NRC inspection, including a description of applicable enforcement, are available in NRC's Agencywide Documents Access and Management System (ADAMS).  In order to obtain electronic copies of publicly-available inspection reports by using the Sample Search Template, the license number is required.  Publicly-available inspection reports can also be obtained from the NRC Public Document Room. Agreement state inspection reports will not be found in ADAMS or the NRC Public Document Room.

To ensure transparency with our stakeholders, the NRC also maintains descriptions of Significant Enforcement Actions for Material Licensees, sorted by date and a database of Significant Enforcement Actions for Material Licensees, sorted alphabetically. For additional information on how the NRC enforces applicable regulations, see Enforcement.

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Medical Events

Operating experience is an essential element in the regulatory process for ensuring that licensed activities are conducted safely. The reporting and analysis of medical events helps to identify deficiencies in the safe use of radioactive material and to help ensure that corrective actions are taken to prevent recurrence.  A medical event may indicate a potential problem in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.  Medical event reporting also allows the NRC to follow up on events and determine if other licensees might be experiencing the same or similar challenges. The NRC assesses trends or patterns, identifies generic issues or concerns, and recognizes any inadequacy or unreliability of specific equipment or procedures. When the NRC identifies similarities in the problems reported from multiple facilities, the NRC issues generic communications that may help prevent additional incidents.

Medical licensees are required to report medical events in accordance with:

35.3045 Report and notification of a medical event.
35.3047 Report and notification of a dose to an embryo/fetus or a nursing child.
35.3067 Report of a leaking source.

In addition to medical events, licensees are required to report events in accordance with 10 CFR Part 20, Subpart M, "Reports," 10 CFR Part 21, "Reporting of Defects and Noncompliance," and 10 CFR 30.50, "Reporting requirements."

The secure database which contains the reported events is not accessible by the public.  However, the NRC's Advisory Committee on the Medical Uses of Isotopes conducts semiannual meetings in which the NRC staff and ACMUI give presentations on the medical events from the past fiscal year. Included in the presentation are the causes of those events if known. Below are the presentation slides:

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High Dose-Rate Remote Afterloader Brachytherapy Devices

The NRC and the Food and Drug Association (FDA) co-regulate high dose-rate remote afterloader brachytherapy devices.  A list of high dose-rate remote afterloader brachytherapy devices that are FDA-cleared for patient treatment using sources exceeding 10 Curies is provided for your convenience. The NRC will not authorize the use of sources exceeding 10 Curies in afterloaders unless the FDA has cleared them.

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Licensees and applicants should consult NUREG 1556 Volume 9, "Program-Specific Guidance About Medical Use Licenses," for the information that should be submitted to support a new license, amendment, or renewal of a medical use.

When completing a U.S. NRC medical use license, the author must complete the "Authorized Use" (item 9) and "User Authorization sections of the license.  The Table of 35.300 Authorizations has provided sample language for common licensing actions.

License Types

NRC assigns a five-digit code to each license to designate the major activity or principal use authorized in the license. These codes may be used to identify the appropriate NUREG-1556 guidance documents and secondary activities or uses authorized in the license. NRC uses approximately 100 program codes to classify the primary and secondary activities of thousands of active licenses.

Licenses with multiple activities may be assigned multiple program codes. When a licensee has more than one program code, the code with the shortest inspection cycle is designated as the highest priority. This code is designated as the primary code.

Additional information provided in the description of each license type may be used to identify the fee categories information in the schedules in 10 CFR Part 170 and 10 CFR Part 171. To learn more about the license category and the associated fee and inspection categories, see "Consolidated Guidance About Materials Licenses: Guidance About Administrative Licensing Procedures" (NUREG-1556, Vol. 20, Appendix G: LTS Program Code Descriptions).

License Types (Program Codes) for Medical Facilities, Practices, Laboratories
The code used depends upon whether the licensee is a medical facility, private practice, mobile service, or laboratory.

License Title License Type (Program Code) NUREG-1556 Vol.
Medical Institution Broad 02110 9 & 11
Medical Institution – Written Directive Required 02120 9
Medical Institution – Written Directive Not Required 02121 9
Medical Private Practice – Written Directive Required 02200 9
Medical Private Practice – Written Directive Not Required 02201 9
Mobile Medicine Service – Written Directive Not Required 02220 9
Mobile Medical Service – Written Directive Required 02231 9
Medical Therapy – Other Emerging Technology 02240 9
In Vitro Testing Laboratories* 02410 9

* not medical use but may be used for medical facilities and practices when it is the only byproduct material used

Additional License Types (Program Codes) Associated with Medical Use
The code used depends upon the medical device used.

License Title License Type (Program Code) NUREG-1556 Vol.
Eye Applicators Strontium-90 02210 9
High Dose Rate Remote Afterloader 02230 9
Teletherapy 02300 9
Gamma Stereotactic Radiosurgery 02310 9
Pacemaker Byproduct and/or SNM – Medical Institution 22160 17
Pacemaker Byproduct and/or SNM – Individual 22161 17
Source Material Shielding 11210 17

Additional License Types (Program Codes) Associated with Medical Use
The code used depends upon radiation program authorizations.

License Title License Type (Program Code) NUREG-1556 Vol.
Research and Development Type A Broad* 03610 11
Research and Development Type B Broad* 03611 11
Research and Development Type C Broad* 03612 11
Research and Development Other* 03620 7
Measuring Systems Analytic Gauges 03122 7
Measuring Systems Gas Chromatographs 03123 7
Measuring Systems Other 03124 7
Irradiators Self-Shielded Less than or Equal to 10,000 Curies 03510 5
Irradiators Other Less than or Equal to 10,000 Curies 03511 6
Irradiators Self Shielded Greater than 10,000 Curies 03520 5
Waste Disposal (Burial) 03231  
Incineration - Noncommercial (Secondary Code) 03235  
Byproduct Material Possession Only - Permanent Shutdown 03800  
Byproduct Material Standby - No Operations 03810  
Decommissioning of Byproduct Material Facilities 03900  
Low Level Waste Storage - Other (Secondary Code) 06101  

* does not include research on human subjects

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Medical use licensees are required to pay an annual license fee to the NRC. Refer to the schedule of materials fees for the fees required for each category of license and each type of fee. Program Codes are provided in the section above.

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The following Forms and Instructions are to be used by medical use licensees.

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