The NIH Congressional Justification ("CJ") provides the Senate and House Appropriations Committees detailed estimates and justifications for research and research support activities (infrastructure, administrative, etc.) that NIH would anticipate funding at the President's Budget Request level.
The FY 2026 President’s Budget proposes to restructure NIH’s 27 separate appropriations into 10 consolidated appropriations. Links to this documentation are provided here: Institute Congressional Justifications