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
U18 Research Demonstration--Cooperative Agreements To provide support for testing, by means of a research design, the effectiveness of the transfer and application of techniques or interventions derived from a research base for the control of diseases or disorders or for the promotion of health. The project should be capable of making conclusions which are generalizable to other sites. These are usually cooperative programs between participating principal investigators, institutions, and the sponsoring Institute(s).

This page last updated on: October 5, 2024
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