Wyo. Stat. § 9-4-214

(a) The state auditor shall establish general control accounts for each fund appropriation included in legislative appropriation acts to reflect the amount of expenditure approved charging against each type of fund the expenditures as made to disclose the unexpended authorizations. The state budget department shall establish budgetary accounts as necessary. The state auditor, state treasurer and the state budget department shall develop and maintain the state's uniform centralized accounting system and methods for identifying, classifying and reporting revenues, receipts and disbursements including accounts and subaccounts for all nonappropriated state funds and shall develop and implement a uniform modified accrual accounting system.

(b) For purposes of this section, "disbursements" does not include payments made for investments by the Wyoming retirement system, its agents or its trustees in connection with portfolio changes, provided any such payments shall be accounted for by the Wyoming retirement board, not less than monthly, in a manner acceptable to the state auditor and the state treasurer.