Certified Home Health Agency (CHHA) Standards and Accreditation Requirements

Certified Home Health Agencies (CHHAs) operate under a specific federal and state regulatory framework that determines eligibility for Medicare and Medicaid reimbursement, sets minimum staffing and clinical standards, and establishes accreditation pathways. This page covers the definitional criteria that distinguish CHHAs from other home care models, the structural requirements imposed by the Centers for Medicare & Medicaid Services (CMS), the accreditation bodies authorized to conduct surveys, and the classification boundaries that separate certified agencies from licensed-only or private-pay operations. Understanding these distinctions is essential for interpreting home care agency accreditation status, evaluating Medicare home health benefit eligibility, and benchmarking home care quality measures.

• 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
• References

Definition and scope

A Certified Home Health Agency is a public or private organization that has met the federal Conditions of Participation (CoPs) established under 42 CFR Part 484 and has been approved by CMS to bill Medicare and/or Medicaid for covered home health services. Certification is distinct from state licensure: licensure is a baseline operating permit issued by a state health department, while certification is a federal determination of compliance with patient care and organizational standards.

The scope of a CHHA must include, at minimum, skilled nursing services and at least one of the following: physical therapy, speech-language pathology, or occupational therapy (42 CFR §484.1). Additional services that CHHAs commonly provide under this framework include home health aide services, home infusion therapy, wound care at home, and skilled nursing at home. The agency must make services available on a visiting basis in a patient's residence, which CMS defines to include private homes, assisted living facilities, and certain institutional settings not qualifying as hospitals or skilled nursing facilities.

Agencies operating exclusively as private-pay or non-Medicare entities are not CHHAs regardless of service scope. The term "certified" is a regulatory designation tied directly to CMS enrollment under the Social Security Act, Title XVIII (Medicare) and Title XIX (Medicaid).

Core mechanics or structure

The operational structure of a CHHA is governed by 42 CFR Part 484, which was substantially revised by CMS's 2017 Home Health Conditions of Participation final rule (82 Fed. Reg. 4504). The 2017 CoPs reorganized the regulatory framework around patient-centered care and outcome-based quality management rather than prescriptive staffing ratios.

Governing body and administrator. Each CHHA must have a governing body that assumes full legal authority for agency operations and designates a qualified administrator. The administrator must meet competency standards defined in state law and CMS requirements (42 CFR §484.100).

Clinical manager. A qualified registered nurse or other appropriate skilled professional must serve as clinical manager, responsible for ensuring that patient care is coordinated, supervised, and evaluated (42 CFR §484.105).

Patient rights. The 2017 CoPs introduced an expanded patient rights framework requiring written notice of rights in advance of care, the right to be informed about the plan of care, and access to a home care complaint and grievance process (42 CFR §484.50).

Plan of care and OASIS. Every patient must have a physician-authorized plan of care, and clinical staff must complete the Outcome and Assessment Information Set (OASIS) at specified time points. OASIS data feeds directly into CMS's Home Health Quality Reporting Program and the Care Compare public reporting system. OASIS completion requirements are detailed further at oasis-assessment-home-health.

Quality Assessment and Performance Improvement (QAPI). Under 42 CFR §484.65, all CHHAs must maintain a written QAPI program that tracks measurable objectives, addresses adverse events, and documents improvement activities. This is an ongoing obligation, not a periodic review.

Infection prevention. A written infection control program is required under 42 CFR §484.70, including policies for standard precautions, surveillance of infections, and staff education.

Causal relationships or drivers

CHHA certification requirements exist primarily because Medicare home health is a high-risk benefit category. The HHS Office of Inspector General (OIG) has historically flagged home health as one of the top five Medicare program areas for improper payments. CMS's 2023 Medicare Fee-for-Service Supplemental Improper Payment Data cited home health as a significant contributor to the overall improper payment rate, driving sustained regulatory scrutiny (CMS Improper Payments).

Three structural drivers shape the regulatory framework:

1. Homebound status gatekeeping. Medicare coverage is contingent on the patient meeting homebound status criteria under 42 CFR §409.42. Because homebound status is clinician-documented rather than independently verifiable, CMS imposes documentation and supervision requirements on CHHAs to reduce upcoding risk.

2. Remote service delivery. Unlike hospital or SNF settings, home health occurs in unobserved environments. Home care supervision requirements and home care documentation requirements exist specifically because CMS cannot directly observe care delivery.

3. Vulnerable population risk. Home health patients are disproportionately elderly, medically complex, and at high risk for adverse events including falls and medication errors. Fall prevention in home care and medication management standards are embedded in CoP expectations and surveyor guidance.

Classification boundaries

CHHAs exist within a broader taxonomy of home care organizations that are frequently conflated:

A CHHA is not the same as a home care aide agency, which provides custodial support without skilled clinical services. Home-care-for-dementia-patients services, for example, may be delivered by either type depending on whether skilled clinical needs exist.

Tradeoffs and tensions

Accreditation vs. state survey. CHHAs can achieve deemed status—satisfying CMS survey requirements through accreditation by an approved national body—instead of undergoing direct state agency surveys. CMS-approved accreditors as of the most recent authorization cycle include The Joint Commission (TJC), Community Health Accreditation Partner (CHAP), and the Accreditation Commission for Health Care (ACHC). Deemed status reduces survey frequency burden but transfers quality oversight to private bodies whose standards may differ in emphasis from CMS's own CoPs, creating a monitoring gap that OIG has noted in multiple reports.

Documentation burden vs. patient time. OASIS assessment, plan of care documentation, and QAPI reporting requirements consume substantial clinician time. Studies published in Health Affairs and by the Medicare Payment Advisory Commission (MedPAC) have noted that administrative burden can reduce time available for direct patient contact, particularly affecting registered nurse home visits and therapy disciplines.

Reimbursement model misalignment. CMS shifted home health reimbursement in 2020 from the Home Health Prospective Payment System (HHPPS) episode model to the Patient-Driven Groupings Model (PDGM), which uses 30-day payment periods and 432 payment groups. PDGM was designed to reduce therapy utilization incentives, but agencies serving high-acuity or medically complex populations have documented margin compression, creating tension between financial sustainability and serving the patients most likely to benefit from post-acute home care.

Social Security Fairness Act of 2023 — benefit expansion impact. The Social Security Fairness Act of 2023 (enacted January 5, 2025) repealed the Windfall Elimination Provision (WEP) and Government Pension Offset (GPO). These provisions had reduced or eliminated Social Security benefits for individuals who also received pensions from employment not covered by Social Security, a category that includes many public-sector employees such as teachers, firefighters, and police officers. With repeal effective for benefits payable after December 2023, a significant population of former public-sector workers and their dependents became newly eligible for full or increased Social Security benefits. For CHHAs, this change has indirect operational relevance: expanded Social Security income for this beneficiary cohort may affect patient financial eligibility calculations for Medicaid, spousal impoverishment rules, and supplemental coverage that intersects with home health benefit access. Agencies serving populations that include former public employees or their spouses should account for the benefit recalculation timelines being administered by the Social Security Administration when coordinating payer source documentation.

State variation. Home care licensing by state requirements layer on top of federal CoPs and vary substantially. New York's CHHA regulations under 10 NYCRR Part 763, for instance, impose additional staffing minimums and supervisory visit frequencies not required under federal CoPs alone.

Common misconceptions

Misconception 1: Accreditation equals Medicare certification.
Accreditation by TJC, CHAP, or ACHC grants deemed status, meaning CMS accepts the accreditor's survey in lieu of its own. However, deemed status must be formally recognized by CMS through a determination letter. An agency that is accredited but has not completed CMS enrollment under 42 CFR Part 424, Subpart P cannot bill Medicare regardless of accreditation status.

Misconception 2: All home health agencies can bill Medicare.
Only CHHAs with active CMS provider agreements and valid Provider Transaction Access Numbers (PTANs) can submit Medicare claims. Licensed-only agencies cannot bill Medicare or Medicaid's home health benefit, though they may bill Medicaid waiver programs under separate authority.

Misconception 3: CHHA certification covers all services the agency provides.
Certification covers the specific services and practice locations identified in the CMS enrollment record. An agency adding a new branch office or expanding service counties must notify its State Survey Agency and may require a separate survey of the new location before billing from it.

Misconception 4: OASIS applies to all patients.
OASIS data collection is required only for Medicare and Medicaid patients receiving skilled care. Patients receiving exclusively aide or homemaker services, or those covered only by private insurance, are not subject to OASIS assessment requirements under federal rules, though some state Medicaid programs impose parallel assessments.

Misconception 5: The Social Security Fairness Act of 2023 has no bearing on home health operations.
The Social Security Fairness Act of 2023 (enacted January 5, 2025), which repealed the WEP and GPO, affects the Social Security benefit amounts of a substantial number of former public-sector workers and their spouses or survivors. Because Medicaid eligibility and cost-sharing determinations are income-sensitive, increased Social Security income resulting from this repeal may alter Medicaid eligibility status or cost-sharing obligations for some home health patients. CHHAs that rely on Medicaid as a payer source for affected patients should be aware that SSA is retroactively adjusting benefit amounts and that patient financial circumstances may shift during the recalculation period.

Checklist or steps (non-advisory)

The following sequence reflects the CMS-documented pathway for initial CHHA certification. This is a structural reference, not procedural guidance.

1. State licensure. Obtain applicable state home health agency license from the relevant state health department. Requirements vary by state; home care licensing by state provides state-level reference information.
2. CMS enrollment application. Complete CMS Form 855A (Medicare Enrollment Application for Institutional Providers) through the Provider Enrollment, Chain, and Ownership System (PECOS).
3. State Survey Agency notification. The State Survey Agency (SA) is notified by CMS upon application receipt. The SA schedules a certification survey, which must occur before Medicare billing begins.
4. Initial certification survey. The SA or an accrediting organization with CMS-approved deeming authority conducts an onsite survey against 42 CFR Part 484 CoPs. Surveyors use CMS's State Operations Manual (SOM) Appendix B for home health agencies.
5. Deficiency resolution. If deficiencies are cited, the agency submits a Plan of Correction (PoC) within the timeframe specified by the SA. Condition-level deficiencies may trigger an Immediate Jeopardy classification requiring rapid remediation.
6. Recommendation of approval. The SA forwards a recommendation to the CMS Regional Office.
7. CMS Regional Office determination. The Regional Office issues the Medicare provider agreement and assigns the CMS Certification Number (CCN).
8. OASIS activation and EDI enrollment. The agency completes OASIS submission setup through the state's designated OASIS contractor and enrolls for Electronic Data Interchange (EDI) to submit claims.
9. Ongoing survey cycle. Certified agencies are subject to recertification surveys, complaint investigations, and focused surveys. The standard recertification survey interval for home health is 36 months under CMS standard survey frequency guidelines, though this can be shortened based on complaint volume or prior deficiencies.
10. QAPI and reporting obligations. The agency maintains continuous QAPI activity and submits OASIS data and Home Health Quality Reporting Program (HH QRP) data as required under CMS's annual policy updates.

Reference table or matrix

CMS-Approved Accreditation Organizations for Home Health (Deemed Status)

Key Regulatory Citations for CHHA Operations

References

• 42 CFR Part 484 — Home Health Services Conditions of Participation (eCFR)