1 — a single digit Type Code. The Type code indicates whether the application is new(1), a renewal(2), a non-competitive applications(5), or other type.
R01 — the Activity Code lists the type of grant that has been applied for (3 symbols).
CA — the Institute Code is a two-letter code for the name of the NIH Institute or Center.
811099 — a six digit Serial Number assigned by the NIH Center for Scientific Review (CSR).
01 — a two digit code for Support Year. The Support Year indicates the current year of support (for example, 01 is a new grant).
A1S1 — the Suffix Code (optional) is used for supplements, amendments, or fellowship institutional allowances.