(a) Internal appeal.(1) Any client who is denied program services is entitled to an appeal through the provider agency.(2) If the client also chooses to file an external appeal, the provider agency must assist the client in filing an external appeal.(b) External appeals. Any client covered by:(1) Medicaid may file an appeal through the Texas Medicaid hearing process; or(2) Medicare, but not Medicaid, may file an appeal through the Centers for Medicare and Medicaid Services hearing process.