Boolean search strings for CNAs: nurse aide registry rules, state title variants and the CNA insurance collision
On this page
- The registry rules that change what a CNA search finds
- Ten Boolean strings by setting and shift
- What Indeed, LinkedIn and Google actually support
- Narrowing by registry state, setting and shift
- False positives worth excluding with NOT
- A worked example: three passes on a night shift search
- What a search cannot verify
- Questions people ask
CNA searches look easy and are not. "CNA" is also a commercial insurance company, so it returns underwriters, claims adjusters and brokers. The role goes by several titles depending on the state and employer: certified nursing assistant, certified nurse aide, nurse aide, nursing assistant, and in some states a title of its own. And a clean list still mixes CNAs in nursing homes, hospital patient care technicians, home health aides and nursing students who took the CNA course on the way to an RN.
Title variants, setting and registry status separate them. Below are ten strings by setting and shift, and what Indeed, LinkedIn and Google support as of October 2026. For RN and LPN searches, see Boolean search strings for nurses; for the screen, see the CNA screening questions.
The registry rules that change what a CNA search finds
The federal rules below apply to Medicare and Medicaid nursing facilities, as of October 2026. States run the registries and can add requirements of their own. This is not legal advice.
- Training. A state-approved nurse aide training and competency evaluation program must include at least 75 clock hours of training and at least 16 hours of supervised practical training (42 CFR 483.152).
- The registry. Each state must keep a nurse aide registry (42 CFR 483.156), and must determine which listed aides no longer qualify because they performed no nursing or nursing-related services for 24 consecutive months.
- Verification before work. A facility must receive registry verification before someone serves as a nurse aide, with a narrow exception for recent program completers not yet listed, and must seek information from every other state registry it believes will have information on the person (42 CFR 483.35(d)).
- The four-month rule. The same section says a facility may not use someone as a nurse aide full time for more than four months unless they are competent and have completed an approved program. That is why some facilities hire nurse aides in training.
- State titles. Maryland's Board of Nursing, for example, handles initial CNA or GNA certification. Profiles in other states use their own titles too, such as STNA or LNA. Check the client's state registry for its exact term, and add it to the title block.
Ten Boolean strings by setting and shift
Swap in the setting, shift and area from your own intake; these are examples.
Long-term care and rehab
1. Skilled nursing CNA — Indeed Smart Sourcing
("certified nursing assistant" OR cna OR "certified nurse aide" OR "nurse aide") AND skill: ("skilled nursing" OR "long-term care" OR snf OR "resident care") NOT (underwriter OR claims OR "insurance agent" OR student)
2. Memory care CNA — Indeed Smart Sourcing
("certified nursing assistant" OR cna OR "nursing assistant") AND skill: (dementia OR "memory care" OR alzheimer's) AND ("resident care" OR adls)
3. Short-term rehab unit — LinkedIn general search
("certified nursing assistant" OR cna OR "nurse aide") AND ("short-term rehab" OR "subacute" OR "post-acute") AND ("vital signs" OR "intake and output" OR transfers) NOT (underwriter OR claims)Hospitals, hospice and home
4. Hospital CNA or patient care tech — LinkedIn Recruiter, Job titles + Keywords filters
("certified nursing assistant" OR cna OR "patient care technician" OR "patient care tech") AND (hospital OR "med surg" OR telemetry OR "emergency department") AND ("vital signs" OR "blood glucose" OR "bedside care")
5. Hospice CNA — Indeed Smart Sourcing
("hospice cna" OR "certified nursing assistant" OR cna) AND skill: (hospice OR "end of life care" OR "palliative care") NOT (chaplain OR "social worker")
6. CNA for home health — Indeed Smart Sourcing
("certified nursing assistant" OR cna OR "home health aide") AND skill: ("home health" OR "home care" OR "in-home care") AND ("personal care" OR adls)Shift, state titles, new aides and X-ray
7. Night shift CNA — Indeed Smart Sourcing
("certified nursing assistant" OR cna OR "nurse aide") AND ("night shift" OR "11-7" OR "overnight" OR nocs) AND skill: ("resident care" OR "long-term care")
8. State title variants — Indeed Smart Sourcing (example for Maryland)
("geriatric nursing assistant" OR gna OR "certified nursing assistant" OR cna) AND skill: ("long-term care" OR "resident care") NOT (underwriter OR claims)
9. Newly certified CNA — Indeed Smart Sourcing
("certified nursing assistant" OR cna OR "nurse aide") AND ("cna certification" OR "state exam" OR "clinical skills test" OR "cna training") AND ("2026" OR "recently certified") NOT ("cna instructor")
10. Public profiles by city — Google X-ray
site:linkedin.com/in "certified nursing assistant" "long-term care" "columbus" -jobs -recruiter -insuranceWhat Indeed, LinkedIn and Google actually support
Indeed's healthcare
Boolean guide shows AND, OR, NOT, quotes and parentheses, a skill: field for the skills
section, and fieldofstudy: and school: for education, as of October 2026. CNA
training usually happens in a short certificate program rather than a degree, so
fieldofstudy: is less useful here than skill:, which is what most strings
above use.
LinkedIn's Boolean help page requires capital AND, OR and NOT, supports quotes and parentheses, and does not support wildcards, so "nurse aide" and "nursing assistant" each have to be written out. LinkedIn Recruiter's Boolean page lists Job titles among the filters that accept Boolean and warns that too many facets in one query can cause problems; put the title variants in Job titles and the setting in Keywords.
Google's search operators page
documents quotes, site:, the minus sign and filetype:, but not OR. Use the full
title in an X-ray and exclude "insurance," as string 10 does, so the insurance company's employees drop
out.
Narrowing by registry state, setting and shift
Registry state is the first filter. A CNA listed in another state usually needs to be placed on the client's state registry before working there, and each state sets its own transfer process. Ask the client whether it will wait, and search the client's state first, then neighboring states whose aides could transfer.
Setting comes next. Nursing home CNAs write about resident care, ADLs and assignments; hospital aides write about vital signs, telemetry floors and patient care technician duties; hospice and home health aides write about visits and families. Some hospitals use the patient care technician title for a broader role, so include it only for hospital searches.
Shift and recent work decide the rest. Ask for the date of the candidate's last paid aide work on every call, because of the 24-month rule, and record shift availability. A candidate who only wants weekends may still be a strong fit if the client runs a weekend program, so ask before ruling anyone out.
False positives worth excluding with NOT
- The insurance collision. CNA's underwriters, claims professionals and brokers match the abbreviation. Exclude "underwriter," "claims," "insurance agent" and "broker."
- Nursing students and RNs. Many nursing students and RNs list a past CNA role. Exclude "registered nurse" and "nursing student" for CNA roles, or call them knowing they may move on soon.
- Medical assistants. MAs share vital signs and patient care terms but work under a different credential. For that search, see Boolean search strings for medical assistants.
- CNA instructors and recruiters. Instructors and facility recruiters list CNA in every line. Exclude "cna instructor," "recruiter" and "staffing coordinator."
- Home health aides when the client needs a facility CNA. Home health aides who are not on the nurse aide registry share many skills. Exclude "home health aide" for facility roles, and see Boolean search strings for home health aides for the reverse.
A worked example: three passes on a night shift search
An invented search, shown as it actually gets narrowed.
Intake: A skilled nursing facility needs CNAs for night shift on a long-term care unit, active on the client's state registry, at least six months of facility experience.
Pass 1: CNA AND nights: insurance employees, nursing students who
worked nights as aides years ago, recruiters and some CNAs.
Pass 2: ("certified nursing assistant" OR cna OR "nurse aide") AND ("night
shift" OR overnight OR "11-7") NOT (underwriter OR claims OR "registered nurse" OR recruiter):
relevant, though some profiles are hospital-only.
Pass 3: add AND skill: ("long-term care" OR "resident care" OR "skilled
nursing") on Indeed, with a radius around the facility. Each candidate's registry listing is
checked before submittal, and the last date of paid aide work is noted on the call.
Excluding the insurance terms and requiring a care setting did most of the work. For CNAs, the setting words separate the right aides from everyone else who has ever written the letters.
What a search cannot verify
A string can find someone whose profile lists the right title and setting. It cannot confirm a registry listing, recent paid work, or how the aide responds when a resident refuses care or a lift is not available. The CNA screening questions cover those, and the CNA job description template helps the client state the registry and shift requirements before you search.
Questions people ask
Should a CNA search use CNA or certified nursing assistant?
Both, plus "certified nurse aide," "nurse aide" and "nursing assistant." States and employers use different titles for the same role, and some states use their own, such as GNA in Maryland. Put every variant the client's state uses in one OR block.
Why does a CNA search return insurance professionals?
Because CNA is also the name of a commercial insurance company, so underwriters, claims adjusters and brokers list it in their work history. Exclude insurance terms such as underwriter, claims and broker with NOT, and require a care term such as resident care or ADLs.
Can a facility hire a CNA who is not yet on the registry?
Federal rules for Medicare and Medicaid nursing facilities require registry verification before someone serves as a nurse aide, with a narrow exception for a person who recently completed an approved program and is not yet listed, under 42 CFR 483.35(d)(4). The facility must also check other states' registries it believes will have information on the person. This is not legal advice.
What happens if a CNA has not worked for two years?
Under 42 CFR 483.156(b)(3), a state must determine which listed aides no longer qualify to remain on the registry because they performed no nursing or nursing-related services for 24 consecutive months. Ask every candidate for the date of their last paid aide work and check the registry.