Tenn. Code Ann. § 68-55-401

There is established a general fund reserve to be allocated by the general appropriations act, which shall be known as the “traumatic brain injury fund,” hereafter referred to as the “fund.” Moneys from the fund may be expended to fund the registry, the TBI coordinator position and additional staff requirements and other expenditures and grants under this chapter. Any revenues deposited in this reserve shall remain in the reserve until expended for purposes consistent with this chapter, and shall not revert to the general fund on any June 30. Any excess revenues shall not revert on any June 30, but shall remain available for appropriation in subsequent fiscal years. Any appropriation from such reserve shall not revert to the general fund on any June 30, but shall remain available for expenditure in subsequent fiscal years.