CMS Put a Ten-Year Clock on Critical Access Eligibility. The Memo Gives Two Different Deadlines.

Key Takeaways

• CMS issued QSO-26-15-CAH on August 21, 2026, setting out how it will evaluate whether a hospital still meets the rural and distance requirements at 42 CFR 485.610. It takes effect 30 days after issuance and replaces guidance from 2016.
• The ten-year review cycle does not start now. The memo says decennial reviews begin in calendar year 2033, and run every ten years after that.
• The memo and the manual text attached to it give different deadlines for the same situation. The memo body says a hospital found ineligible “will generally be allowed two years” to fix it. The attached manual sections say one year, in three separate places.
• A hospital does not have to wait for 2033 to be reviewed. A new acute care hospital seeking initial Medicare certification nearby triggers a review on its own, and CMS says it may review at any time.
• The staffing connection is written into the regulation. A necessary provider hospital that builds a new facility keeps its grandfathered status only if it retains 75 percent of its staff, which turns a nurse turnover rate into an eligibility question.

Table of Contents

• What Does the New CMS Memo Actually Change?
• Why Do Two Parts of the Same Memo Give Different Deadlines?
• What Triggers a Review Before 2033?
• How Does a Location Rule Become a Staffing Problem?
• What Changes on the Schedule If a Hospital Converts?
• How Does SimpleScheduleAI Help?
• What to Do This Week
• Frequently Asked Questions

CMS issued new guidance on August 21, 2026 telling its own staff how to check whether a hospital still qualifies as a Critical Access Hospital. Most of it is procedural. Two things in it matter to anyone running a small rural hospital: the review is becoming a scheduled event rather than an occasional one, and the document contradicts itself about how long a hospital gets to fix an eligibility problem before its Medicare participation ends.

What Does the New CMS Memo Actually Change?

The memo, QSO-26-15-CAH, updates how CMS evaluates compliance with the status and location requirements at 42 CFR 485.610. It takes effect 30 days after issuance, which puts it in force around September 20, 2026, and it supersedes a 2016 memo that has now expired.

Three changes stand out. CMS is introducing decennial reviews, meaning every existing Critical Access Hospital gets checked against the rural and distance rules once every ten years. It clarifies what else triggers a review outside that cycle. And state agencies and accrediting organizations can now run recertification surveys on the normal schedule, without waiting for CMS to confirm rural and distance eligibility first.

The origin explains the timing. In August 2013 the HHS Office of Inspector General published a report titled “Most Critical Access Hospitals Would Not Meet the Location Requirements if Required to Re-enroll in Medicare,” recommending that CMS periodically reassess whether existing hospitals still comply. CMS agreed. This memo is the machinery for keeping that promise, thirteen years later.

One correction worth making early, because the first summaries of this memo got it wrong: the decennial reviews do not start now. The memo is explicit that they begin in calendar year 2033, and are “performed every ten years hence.”

Why Do Two Parts of the Same Memo Give Different Deadlines?

Because the memo body and the manual text attached to it do not match, and the difference is a full year of a hospital’s life.

The memo body says a hospital that fails the rural or distance test gets a letter and “will generally be allowed two years to attempt to reclassify as rural, convert to acute care hospital or rural emergency hospital status, or have its Medicare participation terminated.” Its separate “Adverse Determinations” section repeats the figure, saying the hospital is “allowed generally two years”.

The attachment is an advance copy of the State Operations Manual sections being revised. It says one year. Three times. In the section on a newly certified nearby hospital: “The CAH will be allowed generally one-year.” In the decennial section: “will generally be allowed one year.” And in a worked example of a new hospital opening 20 miles away, the hospital is “generally afforded one year”.

We are not going to tell you which one governs, because we do not know and neither does anyone reading the document from outside CMS. What we can say is that the difference is not academic. Converting to an acute care hospital or a rural emergency hospital is a project measured in quarters, not weeks, and a board planning against two years when the reviewer is working from one has lost half its runway.

The memo names a contact for questions, [email protected]. If your hospital is anywhere near a distance or rural boundary, that address is worth an email now rather than after a letter arrives.

What Triggers a Review Before 2033?

Three things, and only one of them is the ten-year cycle.

The first is a new acute care hospital. If one seeks initial Medicare certification near an existing Critical Access Hospital, CMS reviews the older hospital’s distance eligibility. This also covers a nearby hospital that was missed in an earlier review and has since surfaced through updated data. The second is a hospital requesting certification as, or conversion to, a Critical Access Hospital. The third is the decennial review starting in 2033. Beyond all three, the memo states plainly that CMS “may perform a distance or rural eligibility review of a CAH at any time.”

Some useful specifics for anyone measuring their own exposure. Psychiatric hospitals, long-term care hospitals, and rehabilitation hospitals are not acute care hospitals for this purpose, so one opening nearby does not affect distance eligibility.

Indian Health Service and Tribal facilities work as a separate group. If your hospital is not an IHS or Tribal facility, an IHS hospital ten miles down the road does not count against your distance, and your hospital does not count against theirs either. The exclusion only applies across that line. Two IHS or Tribal facilities near each other are measured against one another normally, and so are two non-IHS hospitals.

There is also a trap for a hospital that is growing rather than shrinking. If you add an off-campus provider-based location created or acquired on or after January 1, 2008, that location must itself sit more than 35 miles from another hospital, or 15 miles in mountainous terrain or where only secondary roads are available. Get it wrong and the hospital goes on a 90-day termination track. CMS recommends asking for an advance determination before adding one, which is cheap insurance compared to unwinding a clinic.

How Does a Location Rule Become a Staffing Problem?

Through the necessary provider rules, and this is the part almost nobody outside the compliance office knows.

Hospitals designated by their state as a necessary provider before January 1, 2006 are exempt from the distance requirement. That exemption is grandfathered and cannot be newly obtained. But it is exempt from distance only, never from the rural requirement, and it comes with a condition that turns into a staffing question the moment the hospital builds anything.

Under 42 CFR 485.610(d), a necessary provider hospital that relocates keeps its grandfathered status only if the new facility serves at least 75 percent of the same service area, provides at least 75 percent of the same services, and “is staffed by 75 percent of the same staff (including medical staff, contracted staff, and employees) that were on staff at the original location.” A replacement building on the same site counts as a relocation.

Read that third test as a nurse leader and it says something uncomfortable: your turnover rate is a Medicare eligibility variable. CMS clearly knows this, because the guidance builds in an accommodation. Hospitals “that have difficulty meeting the 75 percent same staff criterion due to historically high staff turnover and/or vacancy rates” can document the effect and argue the standard against an adjusted staff list. The catch is what has to sit alongside that argument: evidence of active recruitment, and evidence that the cause was “circumstances beyond the CAH’s control rather than the relocation.” The memo suggests what recruitment evidence can look like, “such as” posting vacancies, participating in job fairs, and outreach to professional schools and universities.

That is a documentation burden that lands on whoever keeps the staffing records, which at a hospital this size is usually the same person who builds the schedule. Our rural hospital nurse staffing statistics page collects the turnover and vacancy figures that make this test hard to pass in the first place. The three staff categories are combined rather than measured separately, so strong retention among direct employees can carry weaker retention among contracted staff. If your hospital is planning a replacement facility, the retention numbers you can evidence today are part of that project’s risk, and they are easier to improve two years out than two months out.

What Changes on the Schedule If a Hospital Converts?

The options CMS offers a hospital that fails the test are not equivalent from a staffing perspective. Each one lands differently on the roster.

The acute care conversion is the one that surprises people. A Critical Access Hospital can legitimately cover an inpatient night with an LPN, with a registered nurse supervising the nursing care under 42 CFR 485.635(d). A converted hospital cannot. If your roster is built around that flexibility, conversion is not a paperwork exercise, it is a hiring plan. We have written separately about the rural emergency hospital route and what it does to the schedule, and about the Joint Commission staffing goal that applies to accredited hospitals on top of all of this.

How Does SimpleScheduleAI Help?

SimpleScheduleAI is an AI-native nurse scheduling service for Texas hospitals of 25 beds or fewer. The AI builds each cycle’s schedule, our scheduling team checks it, and the nurse manager approves it. Two parts of that are relevant to everything above.

The first is the record. Every schedule and every change to it is logged: who was scheduled, what changed, and when. If a hospital ever has to evidence retention for a relocation attestation, or show a surveyor who covered which inpatient night, that history is already written rather than reconstructed from memory and text messages.

The second is the coverage floor itself. The rules a draft has to satisfy are configured for the hospital’s own designation, so if the licensing floor changes the schedule changes with it rather than continuing on the old assumption.

The honest boundary: we are a scheduling service, not a compliance consultancy. We do not prepare eligibility submissions, we do not measure your distance to the next hospital, and nothing here is legal advice about your designation. Those questions belong with your counsel and with the CMS contact named in the memo. What a full scheduling cycle covers is the schedule and the record it leaves behind, and it is worth reading the critical access hospital scheduling overview alongside our guide to nurse scheduling software if you are weighing how to handle that record.

What to Do This Week

1. Measure your actual drive to the nearest acute care hospital or Critical Access Hospital, by road, the way CMS does it. If the answer is under 40 miles, you are close enough that a new facility nearby could change your status.
2. Find your necessary provider documentation if you rely on it. CMS gives 60 days to produce it after a letter, the burden of proof is on the hospital, and a pre-2006 designation letter is not something you want to go looking for under deadline.
3. If a replacement building or an off-campus location is anywhere in your capital plan, ask CMS for an advance determination before you commit money to it.
4. Write down your nurse retention rate over the last two years, with the recruitment activity that goes alongside it. Under the 75 percent staff test, that evidence is what an accommodation would rest on.
5. Email the address in the memo and ask which window applies, one year or two. The answer belongs in your board’s risk register either way.

Frequently Asked Questions

Q: Does this memo mean my hospital is about to be reviewed? Not on the decennial cycle, which begins in calendar year 2033. A review before then happens if a new acute care hospital seeks certification near you, if a hospital in your area requests conversion to Critical Access status, or if CMS decides to look, which the memo says it may do at any time.

Q: Is it one year or two years to fix an eligibility problem? The document says both. The memo body says two years in two separate sections; the attached manual text says one year in three places. Until CMS clarifies, plan against the shorter figure and ask the review team directly. The memo gives [email protected] for questions.

Q: Does a new psychiatric or rehabilitation hospital nearby put my status at risk? No. The memo states that psychiatric hospitals, long-term care hospitals, and rehabilitation hospitals are not considered acute care hospitals for the distance calculation, so their proximity does not count against you.

Q: We are a necessary provider hospital. Are we exempt from all of this? From the distance requirement only, and only if the state designated you before January 1, 2006. You still have to be rural, so a change in the boundaries that puts you inside a metropolitan area affects you like any other hospital. And if you relocate or build a replacement facility, the 75 percent tests on service area, services, and staff all apply.

Q: How does nurse turnover affect a hospital’s Medicare status? Only in the relocation case, but there it is direct. A necessary provider hospital that moves keeps its grandfathered exemption only if 75 percent of its staff move with it. CMS allows a hospital with historically high turnover to argue the standard against an adjusted list, provided it can evidence active recruitment and show the cause was outside its control.

Sources

[1] CMS, QSO-26-15-CAH, “Critical Access Hospital (CAH) Evaluation of Compliance with the Rural and Distance Requirements,” August 21, 2026, with attachments summarizing revisions to State Operations Manual Chapter 2. cms.gov. Read in full 2026-08-26; cms.gov blocks automated readers, so the file must be opened in a browser.

[2] Critical access hospital status and location requirements: 42 CFR 485.610. Staffing and staff responsibilities, including the on-duty nurse requirement at (a)(5): 42 CFR 485.631.

[3] HHS Office of Inspector General, “Most Critical Access Hospitals Would Not Meet the Location Requirements if Required to Re-enroll in Medicare,” OEI-05-12-00080, August 14, 2013. oig.hhs.gov.

[4] Critical access hospital provision of services, including the registered nurse supervision requirement at (d): 42 CFR 485.635.

Pradeep Pandey is the co-founder of SimpleScheduleAI, an AI-native nurse scheduling service built for Critical Access Hospitals in Texas. He serves as Deputy General Manager of Operations at Apollo Hospitals and holds an MBA from IIM Trichy. LinkedIn →