Medicaid Home and Community-Based Services (HCBS)

Medicaid Home and Community-Based Services represent the federal-state mechanism through which Medicaid funds long-term services and supports outside of institutional settings such as nursing homes. HCBS programs span personal care assistance, adult day services, supported employment, and home health aide services delivered in private residences, assisted living facilities, and community settings. The structure, eligibility rules, and service arrays vary significantly across states because most HCBS programs operate through waivers that require federal approval but permit substantial state customization. This page covers the statutory foundation, financing mechanics, eligibility boundaries, and known tensions within HCBS policy as administered under federal Medicaid law.

• Definition and scope
• Core mechanics or structure
• Causal relationships or drivers
• Classification boundaries
• Tradeoffs and tensions
• Common misconceptions
• Checklist or steps (non-advisory)
• Reference table or matrix

Definition and scope

HCBS refers to Medicaid-covered long-term services and supports (LTSS) delivered in home and community settings as an alternative to institutional placement. The overarching federal authority appears in Section 1915 of the Social Security Act, which grants the Centers for Medicare & Medicaid Services (CMS) the power to approve state waiver programs that target specific populations — older adults, people with physical disabilities, individuals with intellectual or developmental disabilities (I/DD), and people with serious mental illness, among others.

The scope of HCBS is broad. Covered services can include personal care assistance, respite for family caregivers, skilled nursing in the home, occupational and physical therapy, home modifications (such as wheelchair ramps or grab bars), assistive technology, supported employment, day habilitation, and case management. Not every state covers every service; coverage depends on the specific waiver or state plan authority under which a program operates.

The Medicaid program's overall structure determines HCBS eligibility thresholds, because beneficiaries must first qualify for Medicaid before accessing most HCBS programs.

Core mechanics or structure

HCBS programs operate through three primary federal authorities:

1. Section 1915(c) Waivers — Home and Community-Based Services Waivers
The most common vehicle. States apply to CMS for approval to waive certain Medicaid requirements — particularly the comparability requirement (which normally mandates identical services statewide) and the freedom-of-choice requirement (which normally permits enrollees to use any qualified Medicaid provider). As of the CMS Medicaid HCBS waiver data published by KFF, all 50 states and the District of Columbia operate at least one 1915(c) waiver. These waivers carry enrollment caps, meaning states can limit the number of individuals served, producing waiting lists in most states.

2. Section 1115 Research and Demonstration Waivers
These broader waivers allow states to test new delivery models and expand HCBS coverage to populations not otherwise eligible. They require CMS approval and budget neutrality — the demonstration must not cost the federal government more than it would have spent absent the waiver.

3. Section 1915(i), (j), and (k) State Plan Authorities
Congress added these authorities to give states options short of a full waiver. Section 1915(i) permits states to add HCBS as an optional state plan benefit without a waiver, without enrollment caps, and without requiring institutional-level need. Section 1915(j) allows self-directed personal assistance services. Section 1915(k) (the Community First Choice option) provides a 6 percentage point increase in the federal medical assistance percentage (FMAP) as an incentive for states to cover attendant care services through the state plan (42 U.S.C. § 1396n(k)).

Financing follows the standard Medicaid federal-state matching structure. The federal government pays a share of HCBS costs determined by each state's FMAP, which ranges from 50 percent to over 70 percent depending on state per-capita income (CMS FMAP data, Medicaid.gov).

Causal relationships or drivers

Several intersecting forces shape HCBS policy and spending:

The Olmstead Decision. The U.S. Supreme Court's 1999 ruling in Olmstead v. L.C., 527 U.S. 581 (1999), held that unjustified institutionalization of people with disabilities constitutes discrimination under Title II of the Americans with Disabilities Act. This decision created a legal obligation for states to provide services in the most integrated setting appropriate, directly accelerating investment in HCBS infrastructure across all states.

Aging demographics. The U.S. population aged 65 and older is projected by the U.S. Census Bureau to reach approximately 80 million by 2040, roughly double the 2000 count. As this population grows, Medicaid LTSS spending — the majority of which flows through HCBS — rises in proportion.

Cost differential versus institutional care. Annual costs for nursing home care routinely exceed $90,000 per person in most states (Genworth Cost of Care Survey, cited widely in CMS policy documents), while home-based alternatives are frequently less expensive per beneficiary, driving state interest in HCBS expansion as a budget management strategy alongside a person-centered care rationale.

Federal incentive policy. The American Rescue Plan Act of 2021 (ARPA) provided a temporary 10 percentage point FMAP increase for HCBS spending to encourage states to expand capacity, reduce waiting lists, and improve workforce compensation (CMS ARPA HCBS guidance, July 2021).

Classification boundaries

Not all community-based Medicaid services are HCBS for regulatory purposes. CMS issued a final rule in 2014 (79 Fed. Reg. 2948) establishing specific "settings requirements" that define what constitutes a qualifying home and community-based setting. A setting fails HCBS classification if it:

• Is located in a building that is also a nursing facility or institution for mental disease
• Is on the grounds of or immediately adjacent to a public institution
• Has the effect of isolating individuals from the broader community

Settings that are presumed to have institutional characteristics — and therefore require heightened scrutiny before HCBS services can be billed — include large provider-owned or provider-controlled residential settings. Provider-owned settings must affirmatively demonstrate HCBS qualities such as resident choice of roommate, lockable doors, and access to community activities.

Residential settings that cannot demonstrate these qualities face reclassification and may become ineligible for HCBS funding, regardless of their physical location outside a hospital or nursing home.

Tradeoffs and tensions

Enrollment caps versus entitlement. Because 1915(c) waivers carry enrollment caps, HCBS access is not an entitlement in the same way that nursing home care is under standard Medicaid. A Medicaid-eligible individual who meets institutional level of care criteria has a legal right to nursing facility placement; that same individual may be placed on a waiting list for the equivalent home-based services. KFF analysis has documented that HCBS waiver waiting lists across states have numbered in the hundreds of thousands at various points, with intellectual and developmental disability waivers carrying the longest queues.

Workforce supply constraints. HCBS depends heavily on a direct support professional (DSP) and home health aide workforce that is structurally underpaid relative to comparable institutional roles. Turnover rates in the direct care workforce have been documented at 40 to 65 percent annually in PHI (formerly the Paraprofessional Healthcare Institute) workforce reports, limiting the capacity of HCBS systems to serve all eligible individuals even when funding exists.

Settings rule compliance timelines. States have faced extended deadlines for bringing provider settings into compliance with the 2014 HCBS settings rule, reflecting the difficulty of retrofitting existing residential infrastructure to meet regulatory requirements without displacing current residents.

Self-direction versus oversight. Programs that allow beneficiaries to hire and manage their own workers — including family members — improve autonomy but complicate quality oversight and fraud prevention. CMS maintains financial management service requirements to balance these interests.

Common misconceptions

Misconception: HCBS is available to all Medicaid beneficiaries.
Correction: Most HCBS programs require beneficiaries to meet both financial Medicaid eligibility criteria and a functional eligibility threshold — typically "institutional level of care," meaning the person's needs are severe enough that they would qualify for nursing facility admission. Standard Medicaid coverage for children, pregnant individuals, or low-income adults does not automatically include HCBS waiver services.

Misconception: HCBS is cheaper than nursing home care for all beneficiaries.
Correction: HCBS can be less expensive on a per-person basis when individuals need moderate levels of assistance. However, individuals with very high medical needs may require intensive HCBS packages that approach or exceed nursing home costs. The aggregate budget impact also depends on whether HCBS draws in additional beneficiaries who would not otherwise have used institutional care — a "woodwork effect" that increases total program spending.

Misconception: The federal government mandates a uniform HCBS benefit.
Correction: No uniform federal HCBS service package exists. Each state's waiver defines its own covered service array, eligibility criteria, geographic reach, and enrollment cap. Two individuals with identical functional needs in neighboring states may access substantially different services under different program names.

Misconception: Assisted living automatically qualifies as an HCBS setting.
Correction: Assisted living facilities may or may not qualify as HCBS settings depending on whether they satisfy the CMS settings requirements. Provider-controlled residential settings require affirmative documentation that they meet the requisite qualities; many facilities have required physical and operational modifications to achieve compliance.

Checklist or steps (non-advisory)

The following sequence describes the standard pathway states follow to establish or renew a 1915(c) HCBS waiver:

1. State need assessment — State Medicaid agency documents target population size, existing service gaps, and projected enrollment.
2. Waiver application drafting — State completes the CMS HCBS waiver application template, specifying covered services, provider qualifications, quality assurance protocols, and enrollment cap.
3. Public notice period — State publishes a notice of intent and accepts public comment before submission, consistent with federal Medicaid transparency requirements.
4. CMS submission — Application submitted through the CMS waiver management system (WMS).
5. CMS technical review — CMS reviews for completeness, budget neutrality, compliance with settings requirements, and alignment with applicable regulations.
6. Negotiation and clarification — CMS issues clarification questions; state responds; revisions submitted as needed.
7. CMS approval — CMS issues formal approval for a defined period (typically 5 years for 1915(c) waivers).
8. Implementation — State begins enrollment, executes provider agreements, and activates quality management systems.
9. Annual reporting — State submits performance data and financial reports to CMS each year of waiver operation.
10. Renewal application — State submits renewal before expiration, incorporating any required updates to reflect regulatory changes or CMS guidance.

Individuals seeking to understand how to navigate Medicaid program access can consult the how-to-get-help-for-medicaid resource for procedural orientation.

Reference table or matrix

Comparison of Primary HCBS Federal Authorities

Additional questions about program structure and eligibility are addressed in the Medicaid frequently asked questions reference.

The Medicaid program home provides orientation to the full scope of Medicaid coverage categories and federal-state financing mechanics that underpin HCBS program design.