Grant Number

A grant number is a unique identifier for a grant composed of the application type code, activity code, institute code, 6-digit serial number, support year and/or suffix code for the support year of the grant, or other information, such as a supplement (S1), resubmission (A1), or a fellowship’s institutional allowance. NIH Grants Policy Statement, Glossary; NIH: Deciphering NIH Application/Grant Numbers