Activity Codes

NIH uses three-character activity codes to differentiate the wide variety of research-related programs NIH supports. The first character typically identifies the major funding category or program type. For example, activity codes for research and development often start with "R," training with "T," fellowship with "F," and career development with "K." Each institute and center (IC) participates in a subset of activity codes. Although each activity code has a broadly defined purpose, there may be differences in their use from one IC to another. Applicants should always refer to the funding opportunity for the specific requirements and details of an initiative.

Activity Code ▼ Funding Category Title Description
TL1 Research Training and Career Development Linked Training Award To support research training experiences for pre- and post-doctoral trainees who are interested in pursuing research careers in multi-disciplinary clinical and translational science. The training award is administratively linked to another project or projects. A TL1 award may only be disaggregated from a U54 application and organizations may not apply for a TL1, Linked Training Award. The TL1 is used in lieu of the T32 for those programs that offer linked awards.

This page last updated on: October 14, 2024
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