048-9 Wyo. Code R. § 9-2
(a) This Chapter shall apply to and govern the participation in the Medicaid program by providers of inpatient or outpatient hospital services. It is intended to be read in conjunction with the other rules of the Department, including but not limited to, Chapters 8, 24, 26, 30, 31, 32 and 33. This Chapter shall apply to services furnished on or after its effective date.
(b) The Department may issue Provider Manuals, Provider Bulletins, or both, to interpret the provisions of this Chapter. Such Provider Manuals and Provider Bulletins shall be consistent with and reflect the policies contained in this Chapter. The provisions contained in Provider Manuals or Provider Bulletins shall be subordinate to the provisions of this Chapter.
048-9 Wyo. Code R. § 9-2