When the agency calls to say a 'home health aide' will start Monday, you wonder how that differs from the 'CNA' who helped your mother during her rehab stay. Is one more qualified? Can the aide give medicine? Who checks their work?
These titles get mixed up, even by agencies. Here's a plain-language guide to certified nursing assistants, home health aides and personal care aides.
The short answer
A certified nursing assistant, or CNA, has completed a state-approved training program and passed a competency exam, and is listed on the state's nurse aide registry. CNAs most often work in nursing homes, hospitals and rehab units, under the supervision of nurses4. A home health aide works in people's homes, often for a home health or home care agency. Aides employed by Medicare-certified home health agencies must meet federal training or competency requirements2. In many states, a CNA can also work as a home health aide, and the two roles overlap a lot.
A personal care aide, sometimes called a caregiver or companion, helps with daily tasks at home but may have little formal training, depending on the state3. Our guide to home care vs. home health explains the difference between non-medical home care and medical home health services.
Side-by-side comparison
| CNA | Home health aide | Personal care aide | |
|---|---|---|---|
| Typical setting | Nursing homes, hospitals, rehab | Private homes, through agencies | Private homes, assisted living |
| Federal training minimum | 75 hours for nursing homes | 75 hours for Medicare home health agencies | Varies by state |
| Competency test | Yes | Yes, or competency evaluation | Varies |
| Supervised by | Licensed nurses | Registered nurse or therapist | Agency or family |
| Typical tasks | Bathing, dressing, vital signs, mobility | Personal care, vital signs, help with exercises | Personal care, meals, housekeeping, companionship |
CNA training
Federal rules for nurse aides who work in nursing homes require a training program of at least 75 clock hours, including at least 16 hours of supervised practical training1. At least 16 hours of training must be completed before the aide has any direct contact with residents1. Required topics include communication, infection control, safety and emergency procedures, residents' rights, basic nursing skills, personal care skills, and care of residents with cognitive impairment such as dementia1.
Many states require more than 75 hours. Nursing homes must also give nurse aides at least 12 hours of in-service training each year, including dementia care and abuse prevention5. If a nursing home employs or has offered a job to a person, it can't charge them for training1.
Home health aide training
Aides who work for Medicare-certified home health agencies must complete a training and competency evaluation program or a competency evaluation alone2. Classroom and supervised practical training must total at least 75 hours, with at least 16 hours of classroom training before at least 16 hours of supervised practical training2. Home health aides must also get at least 12 hours of in-service training each year2.
Training covers communication, observing and reporting changes, vital signs, infection control, personal hygiene and grooming, safe transfers and positioning, nutrition and fluid intake, and recognizing emergencies2. States may add their own requirements.
Who supervises them
In a nursing home, CNAs work under licensed nurses, who assign tasks and oversee care. In Medicare home health, a registered nurse or therapist must regularly supervise the aide and check that care follows the plan2. That supervision includes on-site visits to the patient's home2. For private-pay home care, supervision depends on state rules and the agency. Ask the agency who supervises aides, how often, and how you can reach that person.
This matters because aides spend more hands-on time with your parent than anyone else. They're often the first to notice a new rash, confusion, a fall or a change in appetite, so good supervision helps those changes reach the nurse quickly.
What aides can and can't do
CNAs and home health aides typically help with bathing, dressing, toileting, grooming, moving and walking, eating, and changing bed linens. They may take vital signs, help with prescribed exercises, and report changes to the nurse. What they generally can't do is give injections, change complex wound dressings, or make medical judgments; those tasks belong to nurses. Whether an aide can help with medicines depends on state law and the setting; some states allow certified medication aides to give certain medicines after extra training.
If your parent needs medication help at home, ask the agency exactly what its aides are allowed to do. Our guide to polypharmacy in the elderly explains why accurate medication help matters.
Where you'll see each role
In a nursing home or skilled nursing unit, the people giving most daily care are CNAs. In assisted living, aides may be CNAs, personal care aides or medication aides, depending on state rules; see assisted living levels of care. When Medicare covers home health after a hospital stay, the agency sends a home health aide for personal care on a part-time basis, alongside nurses and therapists; see does Medicare pay for home health care. For ongoing help with daily life at home, families usually hire personal care aides or home health aides through a home care agency.
Which does your parent need?
If your parent needs help with bathing, dressing and getting around at home but is otherwise medically stable, a trained personal care aide or home health aide is often enough. If your parent has more complex needs, such as frequent transfers, a feeding tube, or advanced dementia, an aide with CNA or home health aide training and nurse oversight is safer. If they need skilled nursing tasks, a nurse must provide them. A geriatric care manager can help you sort out the right level of care.
Questions to ask an agency
Whatever title an agency uses, ask: What training do your aides have? Are they certified, and can I check the state registry? Do you do background checks? Who supervises aides, and how often does a nurse visit? What happens if the regular aide is sick? Can my parent have the same aide consistently? What tasks are aides allowed to do? How do aides report changes in my parent's condition? See questions to ask a home care agency for a full list.
Checking a nurse aide registry
Every state keeps a nurse aide registry listing CNAs who have completed training and testing, along with findings of abuse, neglect or theft. You can usually search it online by name. Ask an agency or nursing home for an aide's full name if you want to check. Some states also keep registries for home health aides. If you have concerns about an aide's conduct, report them to the agency and, if serious, to the state. See signs of elder abuse.
Hiring an aide privately
Some families hire an aide directly instead of through an agency. That can give you more control and flexibility, but you take on responsibilities like background checks, taxes, backup care and supervision. Ask for proof of any certification and check the registry. Our guide to home care agency vs. private caregiver compares the two approaches.
Paying for aides
Medicare covers part-time home health aide services only when your parent qualifies for Medicare home health, such as being homebound and needing skilled care; it doesn't cover ongoing personal care alone. Medicaid, through waivers, often covers personal care aides at home; see Medicaid waivers for home care. Long-term care insurance may cover aides if the policy's conditions are met. Many families pay privately. Some states let family members be paid as caregivers; see getting paid to care for a parent.
Working well with your parent's aide
A good relationship with the aide makes a big difference for your parent. Share what you know: your parent's routines, likes and dislikes, how they prefer to be addressed, and what tends to upset them. Write down key information, like allergies, fall risks and emergency contacts, and keep it where the aide can see it. A notebook in the home where the aide notes meals, mood, bowel movements and anything unusual helps family members stay informed.
Treat the aide as part of the care team. Ask what they notice and thank them for their work. Aides often have the most hands-on time with your parent, and turnover is common in this field, so a respectful, clear working relationship helps keep a good aide. If something isn't working, raise it with the agency's supervisor first, calmly and with specifics. For a parent with dementia, consistency matters even more, so ask the agency to keep the same aide whenever possible. See person-centered dementia care for approaches aides and families can share.
An example
After her stroke, Diane's mother came home with Medicare home health. A home health aide came three mornings a week to help her bathe, under a nurse's supervision. When home health ended, Diane hired a home care agency for daily help. She asked whether its aides were certified and checked the state registry for the aide assigned to her mother. The agency's nurse visited every few weeks to update the care plan, and Diane kept a notebook in the kitchen where the aide noted meals, mood and any concerns. This is an illustration; services depend on your parent's needs and state rules.
