Which waiver allows Medicaid coverage to be limited to certain beneficiaries within a state?

The Waiver of Statewideness is the correct answer because it specifically allows a state to provide Medicaid coverage only to specific groups of beneficiaries rather than to all individuals who meet the general eligibility criteria statewide. This waiver enables states to implement programs that target particular populations or geographic regions, facilitating tailored solutions that address unique local needs.

For example, a state may choose to offer Medicaid services only to certain age groups, disabilities, or other criteria that do not apply across the entire state. This flexibility is crucial in enabling states to broaden their service delivery without being bound by the requirement to provide uniform services to all eligible individuals throughout the state.

The other waivers mentioned do have distinct roles in Medicaid policy but do not specifically restrict coverage to certain beneficiaries. The Waiver of Comparability allows states to offer different services to different populations, but it does not imply a restriction based on specific beneficiary categories. The Waiver of Certain Income and Resource Rules allows states to adjust the financial eligibility criteria for certain groups, while the Waiver of Work Incentives is specifically designed around employment-related supports for individuals with disabilities. None of these options capture the specific limitation on coverage to certain beneficiaries that the Waiver of Statewideness facilitates.