# Critical Access Hospitals: The 101-Percent-of-Cost Bargain Holding Rural Medicine Together

Medicare paid Critical Access Hospitals about 12 billion dollars in 2023 at 101 percent of their own reported cost. Here is why that mechanic exists, and what it buys.

Author: J.A. Watte
Published: July 16, 2026
Source: https://jwatte.com/blog/critical-access-hospitals-rural-medicare/

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There is a category of American hospital that Medicare pays according to a rule that would be unthinkable almost anywhere else in the program: it reimburses the hospital 101 percent of whatever the hospital says it cost to deliver the care. Not a fixed price per case, not a negotiated rate, but the hospital's own reported cost, plus one percent. There are nearly 1,400 of these hospitals, they are called Critical Access Hospitals, and in 2023 Medicare's cost-based payments to them came to about 12 billion dollars. Stated one way, that is a program that pays the least efficient hospitals in the country more for spending more. Stated another way, it is the only thing keeping a working emergency room within an hour's drive of several million rural Americans. Both descriptions are accurate, and which one you reach for depends less on the arithmetic than on what you think a hospital in an empty county is for.

## What it is, and who actually runs it

The Critical Access Hospital designation was created by Congress in the Balanced Budget Act of 1997, which established the Medicare Rural Hospital Flexibility Program, [as MedPAC's payment primer states plainly](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf). The problem it was written to solve was that small rural hospitals were closing under the standard Medicare payment system, and a wave of closures in the late 1980s and early 1990s had made that a national concern. The fix was to carve out a special class of hospital that would be paid differently.

To qualify, a hospital has to stay small and stay remote. It is limited to 25 or fewer acute care inpatient beds. It must sit more than 35 miles by primary road from the nearest other hospital, or more than 15 miles in mountainous terrain or where only secondary roads connect them, [again per MedPAC](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf). It has to keep its annual average length of stay for acute care patients at 96 hours or less, and it has to provide emergency services around the clock, [according to the HRSA-funded Rural Health Information Hub](https://www.ruralhealthinfo.org/topics/critical-access-hospitals). The 96-hour figure is worth reading carefully: it is an annual average, not a cap on any single admission, so a Critical Access Hospital can keep a patient longer than four days without violating anything, as long as its yearly average stays under the line.

As of April 2026 there were 1,383 Critical Access Hospitals in operation, [by the Rural Health Information Hub's count](https://www.ruralhealthinfo.org/topics/critical-access-hospitals) of CMS certification data. MedPAC rounds that to "nearly 1,400." Whichever number you use, it means roughly one in four American hospitals now carries this designation. That is not an accident of geography, and the story of how the count got that high is where the interesting policy tension begins.

## The mechanic: 101 percent of cost, not charges

Everything about a Critical Access Hospital's finances flows from one departure from the rest of Medicare. The standard system pays hospitals prospectively: a fixed rate per case under the inpatient system, a fixed rate per service under the outpatient system, set in advance and the same regardless of what the individual hospital actually spent. A Critical Access Hospital is exempt from that. Instead it receives 101 percent of its reasonable cost for inpatient, outpatient, laboratory, therapy, and swing-bed services, [as MedPAC puts it](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf): "Each CAH receives 101 percent of its costs." The statutory basis is section 1834(g) of the Social Security Act.

Two precise points matter here, because blurring either of them is how people get the program wrong. First, it is 101 percent of cost, never of charges. Costs are what the hospital spent; charges are the list prices it bills, which are typically much higher. The distinction is not academic. When a Medicare patient walks into a Critical Access Hospital, the hospital gets paid on cost, but the patient's own outpatient coinsurance is calculated as 20 percent of charges, not costs, [again per MedPAC](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf). Because charges usually exceed costs, a beneficiary at a Critical Access Hospital can end up paying more out of pocket for the same outpatient service than a beneficiary at a regular hospital. MedPAC's June 2025 report reportedly proposed reducing that cost sharing, though that specific proposal is a detail I would treat as plausible rather than fully confirmed here. The inpatient deductible is the ordinary one, 1,676 dollars in 2025.

Second, the full 101 percent is more of a ceiling than a realized figure. The original program paid 100 percent of cost; the extra one percent was added effective January 2004, a date distinct from the program's 1997 origin. And since April 2013 the 2 percent Medicare sequester has clipped these payments, alongside limits on bad-debt reimbursement, so in practice a Critical Access Hospital nets somewhat below the headline 101 percent. MedPAC flags this directly in a footnote. The honest way to describe the payment is "up to 101 percent of cost, less the sequester."

The money is not evenly spread across service lines. Of the roughly 12 billion dollars in cost-based payments in 2023, about 61 percent went to outpatient care, 21 percent to inpatient, and 18 percent to swing-bed services, [the post-acute care these hospitals deliver in their own acute beds](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf). The average Medicare payment per Critical Access Hospital was about 9 million dollars in 2023. And one clarification the number invites: that 12 billion is the Critical Access Hospital cost-based slice specifically. It excludes the rural health clinic services and other separately paid lines these hospitals also run, and it is not the sum of every rural adjustment Medicare makes. It is one designation's bill, not the whole rural lattice.

## The 35-mile rule and the loophole that let almost everyone in

If the distance rule were the only door, there would be far fewer than 1,383 Critical Access Hospitals, because a great many of them do not actually sit 35 miles from anywhere. They got in through a side entrance that Congress has since bricked up.

From 1997 onward, a state could waive the distance requirement by declaring a hospital a "necessary provider." That waiver was the engine of the program's growth. It let states convert hospitals that were small and rural but not genuinely isolated, and states used it heavily. In 2005 alone, more than 200 hospitals became Critical Access Hospitals. Then the Medicare Prescription Drug, Improvement, and Modernization Act of 2003 shut the door: starting in January 2006, states lost the ability to declare any new necessary providers, [as MedPAC records](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf). The contrast is stark. Among Critical Access Hospitals operating today, fewer than 200 converted after 2006, against the more than 200 that converted in 2005 by itself.

The crucial detail is that hospitals admitted through the loophole kept their status. The 2006 change closed the program to new necessary-provider entrants but grandfathered every existing one. So the map today shows a large share of Critical Access Hospitals that would not pass the 35-mile test if they were judged fresh, sitting close to other hospitals while still collecting cost-based payment. This is the sharpest efficiency objection to the program, and it is a real one. But it needs stating precisely: the loophole is closed to new entrants and has been since 2006. It is not open, and the grandfathered hospitals are a legacy population, not a growing one.

## The other rural designations, kept straight

Critical Access is the headline designation, but it is one of several ways Medicare props up rural hospitals, and they are constantly confused with one another. They should not be, because they work on opposite principles. Critical Access Hospitals are paid on cost and sit outside the prospective payment system entirely. The others are adjustments layered on top of prospective payment. The distinctions, all drawn from the [Rural Health Information Hub's payment overview](https://www.ruralhealthinfo.org/topics/healthcare-payment):

- **Sole Community Hospital (SCH)**: the only short-term acute hospital reasonably serving its area, typically about 35 miles from other like hospitals. It stays inside the prospective system but receives an adjustment of about 7.1 percent above the outpatient rate, excluding drugs and biologics, and gets the more favorable of a hospital-specific or federal rate on the inpatient side. This is an add-on, not cost-based payment.
- **Medicare-Dependent Hospital (MDH)**: a small rural hospital with 100 or fewer beds where Medicare accounts for at least 60 percent of inpatient days or discharges. It gets enhanced inpatient payment and cannot also hold Sole Community status.
- **Low-Volume Hospital (LVH)**: under the current expanded standard, a hospital with fewer than 3,800 total discharges in the prior year that sits more than 15 miles from the nearest hospital paid under the inpatient prospective system. The adjustment runs up to 25 percent per discharge, but it is a sliding scale, 25 percent at 500 discharges or fewer and phasing linearly down to zero at 3,800, not a flat bonus every qualifying hospital collects.

Two of these carry a fiscal-year asterisk. The Medicare-Dependent Hospital program and the generous version of the Low-Volume adjustment are both temporary extenders that Congress renews in short bursts, and both are currently authorized only through the end of 2026, [per CMS's implementing guidance](https://www.ruralhealthinfo.org/topics/healthcare-payment). The permanent Low-Volume standard underneath the extension is far stricter, fewer than 200 discharges and more than 25 miles. If these programs are not extended again, they lapse. Describing them as permanent features of the rural payment landscape would be a mistake.

## The new pressure valve: Rural Emergency Hospitals

For a hospital too small to survive even on cost-based payment, Congress in 2020 created an exit that is not a closure. Section 125 of the Consolidated Appropriations Act, 2021, established the Rural Emergency Hospital designation, effective January 1, 2023, [according to the Rural Health Information Hub](https://www.ruralhealthinfo.org/topics/rural-emergency-hospitals). A Rural Emergency Hospital gives up inpatient care entirely and keeps only its emergency department, which must run 24 hours a day, plus outpatient, observation, and ambulance services. In exchange it receives a flat monthly facility payment, 285,626 dollars in 2025, [confirmed by both MedPAC and the Rural Health Information Hub](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf) (the Hub gives 285,625.90, a rounding difference). That works out to about 3.4 million dollars a year in fixed payment, independent of volume, and the figure rises each year with the hospital market basket. On top of the monthly payment, a Rural Emergency Hospital is paid the standard outpatient rate plus 5 percent for covered outpatient services.

Eligibility was frozen to a snapshot: Critical Access Hospitals and rural hospitals with 50 or fewer beds that were operating in Medicare as of December 27, 2020, including tribal and Indian Health Service facilities of that size. The logic of the model is the same as cost-based payment, funding standby capacity rather than volume, but stripped down to the emergency room that a dying inpatient hospital can no longer afford to keep open.

The important caveat is scale. As of October 2025 there were 42 Rural Emergency Hospitals in the entire country, [by the Rural Health Information Hub's count](https://www.ruralhealthinfo.org/topics/rural-emergency-hospitals), against well over a thousand eligible facilities. The designation is real, it is new, and it may matter more over time, but three years in it is a trickle, not a transformation. Anyone describing Rural Emergency Hospitals as reshaping rural care is describing something that has not happened yet.

## Why it looks like a loss

Held against ordinary efficiency logic, cost-based reimbursement is close to indefensible, and the objection is structural rather than moral. Prospective payment exists precisely to create an incentive: a hospital paid a fixed rate per case keeps the difference if it treats the patient for less and eats the loss if it spends more, so it has a standing reason to hold costs down. Cost-based payment removes that lever entirely. Under the Critical Access rule, higher spending simply produces a higher payment. MedPAC's own description is that these payments are based on each hospital's costs and not on the type or number of services provided. There is no built-in pressure to be efficient, because efficiency is not what the formula rewards.

Layer the necessary-provider history on top and the critique sharpens. The waiver expanded the program from the genuinely isolated hospitals it was written for to what MedPAC calls almost all small rural hospitals, and the grandfathering means a substantial share of Critical Access Hospitals collect cost-plus payment while sitting within easy reach of another hospital. Government auditors have repeatedly noted that many Critical Access Hospitals would not meet the distance criterion if judged today. And the beneficiary cost-sharing quirk, coinsurance on charges rather than costs, means the program can leave rural patients paying more out of pocket than urban ones for the same outpatient care, an outcome nobody designed on purpose.

None of this is an accusation that any particular hospital is wasteful. It is a statement about what the payment method does and does not reward. The formula was chosen for a reason that has nothing to do with efficiency, which is the other half of the ledger.

## Ratio-adjusted for the communities

Change the question from "is this efficient" to "what is the alternative," and the program reads the opposite way. A Critical Access Hospital is very often the only source of emergency and acute care across a wide, thinly populated catchment, and the nearest alternative can be an hour or more away. That distance is not an inconvenience when the emergency is a stroke, a heart attack, a trauma, or an obstetric crisis, where the clock is the whole game. Cost-based payment exists because these hospitals cannot spread the fixed cost of a 24-hour emergency department and standby staff across enough patients to survive under per-case rates. A low-volume hospital paid per case loses money on the standby capacity itself, no matter how well it runs. Paying it on cost is a way of buying that capacity directly.

The stakes are visible in the closure record. The [UNC Cecil G. Sheps Center for Health Services Research](https://www.shepscenter.unc.edu/programs-projects/rural-health/rural-hospital-closures/), the authoritative tracker, counts 154 rural hospital closures and conversions since 2010 as of early December 2025: 86 complete closures, where the hospital ceased all health services, and 68 converted closures, where it stopped inpatient care but kept some services. That count is worth quoting exactly and to the right source, because looser secondary write-ups float higher numbers using different definitions and date windows. The Sheps Center also, deliberately, does not count Rural Emergency Hospital conversions as closures; it treats them as a separate hospital type. Its research ties these closures to the emergence of care deserts, places where residents lose local inpatient and emergency access outright.

Rural hospitals are also, routinely, among the largest employers in their counties, so a closure takes both the care and a significant payroll out of a local economy at once. The value a community places on keeping its hospital, like the value a fjord village places on its subsidized flight, resists per-unit pricing, because the thing being bought is access and standby readiness, not throughput. That is the case cost-based payment is built to serve, and it is not answered by an efficiency metric, because efficiency is measuring something the program was never trying to maximize.

It is worth drawing one line clearly here, because the finances of American hospitals vary enormously and the distinction matters. The large nonprofit hospital systems that dominate the headlines about health-care wealth run tens of billions of dollars in investment portfolios and, in strong years, earn more from the markets than from patient care, a pattern followed in the [companion piece on 340B and the systems behind the drug-discount spread](/blog/340b-drug-pricing-program/). The standalone Critical Access Hospital is close to the opposite kind of institution: small, often operating near or below break-even, with little or nothing in reserve. Some are owned by larger systems, which blurs the picture, but cost-based payment exists precisely because the typical isolated hospital has no endowment, no market portfolio, and no cushion to absorb the standby cost of a mostly empty emergency room. The investment-fund critique of nonprofit hospitals is real, and it is aimed at a different animal than the county hospital this program keeps alive.

## The ledger reading

Critical Access reimbursement is honestly described as inefficient and honestly described as necessary, because those verdicts answer two different questions. Measured against the incentive logic of prospective payment, paying 101 percent of a hospital's own reported cost is exactly the design a system builds when it has given up on cost control, and the grandfathered non-isolated hospitals make the objection concrete rather than theoretical. Measured against the alternative in a county where the next emergency room is 60 miles of two-lane road away, it is close to unanswerable, because the standby capacity it funds has no substitute at any price a per-case market would ever pay for it.

What makes the arrangement durable is that Medicare is doing this on purpose. It is deliberately paying more per unit to the least efficient hospitals in the system because in these specific places the efficient outcome and the acceptable outcome are not the same thing. The 12-billion-dollar figure is the price of that choice, and the closure count is the running tally of where the choice was not enough. The Rural Emergency Hospital designation is Congress hedging the bet, offering a smaller, cheaper, emergency-only form of the same standby subsidy to hospitals that can no longer sustain the full one, though so far only 42 have taken it. The lesson underneath is the one that surfaces every time public money meets a thin, dispersed public good. Efficiency and access are different yardsticks, a program can fail one and pass the other, and the number you lead with is usually a decision you made before you opened the cost report.

## Related reading

- [Essential Air Service: What It Costs to Keep Small-Town America Flying](/blog/essential-air-service-rural-subsidy/): the same efficiency-versus-access tension in a different rural subsidy, where the per-passenger number and the per-community number tell opposite stories.
- [The 340B Drug Pricing Program](/blog/340b-drug-pricing-program/): another piece of the safety-net funding lattice that runs through hospitals, read the same structural way.
- [Federally Qualified Health Centers](/blog/federally-qualified-health-centers/): the outpatient counterpart, cost-based payment for primary care in the places the market will not serve.

## Fact-check notes and sources

**Origin, eligibility rules, and count.** The Critical Access designation was created by Congress in the Balanced Budget Act of 1997 via the Medicare Rural Hospital Flexibility Program; the 25-bed limit, the 35-mile (or 15-mile secondary-road) distance rule, and the 24/7 emergency requirement are the conditions of participation. The 96-hour figure is an annual average length of stay, not a per-admission cap. Sources: [MedPAC, Payment Basics: Critical Access Hospitals](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf) (revised November 2025) and the HRSA-funded [Rural Health Information Hub](https://www.ruralhealthinfo.org/topics/critical-access-hospitals), which gives the 1,383 count as of April 2026. MedPAC rounds to "nearly 1,400."

**The payment mechanic.** Medicare pays 101 percent of reasonable cost (not charges) for inpatient, outpatient, laboratory, therapy, and swing-bed services, statutory basis section 1834(g) of the Social Security Act; the extra 1 percent took effect January 2004, and payments net below 101 percent after the 2 percent sequester (since April 2013) and bad-debt limits. Beneficiary outpatient coinsurance is 20 percent of charges; the inpatient deductible was 1,676 dollars in 2025. Source: [MedPAC](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf). The reported June 2025 MedPAC proposal to reduce that cost sharing is noted here as plausible but not independently confirmed.

**Spending.** Medicare cost-based payments to Critical Access Hospitals were about 12 billion dollars in 2023 (including beneficiary cost sharing), split roughly 61 percent outpatient, 21 percent inpatient, 18 percent swing-bed; the average payment per hospital was about 9 million dollars. This is the Critical Access cost-based slice only, excluding separately paid lines such as rural health clinic services. Source: [MedPAC](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf).

**The necessary-provider loophole.** The Medicare Prescription Drug, Improvement, and Modernization Act of 2003 ended states' ability to declare new necessary-provider Critical Access Hospitals starting January 2006, while grandfathering existing ones; fewer than 200 currently operating hospitals converted after 2006, versus more than 200 in 2005 alone. Source: [MedPAC](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf).

**Sole Community, Medicare-Dependent, and Low-Volume designations.** Sole Community Hospital add-on of about 7.1 percent above the outpatient rate (excluding drugs and biologics); Medicare-Dependent Hospital 100-bed and 60-percent-Medicare thresholds; Low-Volume adjustment of up to 25 percent on a sliding scale under the expanded fewer-than-3,800-discharges / more-than-15-miles standard. The Medicare-Dependent program and the expanded Low-Volume standard are temporary extenders authorized only through the end of 2026; the permanent Low-Volume standard is stricter (fewer than 200 discharges / more than 25 miles). Source: [Rural Health Information Hub](https://www.ruralhealthinfo.org/topics/healthcare-payment).

**Rural Emergency Hospitals.** Created by Section 125 of the Consolidated Appropriations Act, 2021, effective January 1, 2023; emergency and outpatient services only, no inpatient care; flat monthly facility payment of 285,626 dollars in 2025 (Rural Health Information Hub gives 285,625.90), rising with the market basket, plus 5 percent above the standard outpatient rate; eligibility limited to Critical Access Hospitals and rural hospitals of 50 or fewer beds operating as of December 27, 2020; 42 conversions as of October 2025. Sources: [MedPAC](https://www.medpac.gov/wp-content/uploads/2024/10/MedPAC_Payment_Basics_25_CAH_FINAL_SEC.pdf) and [Rural Health Information Hub](https://www.ruralhealthinfo.org/topics/rural-emergency-hospitals). A circulated 2026 monthly figure near 301,073 dollars comes from an industry FAQ and is not confirmed against a CMS primary source here; this piece anchors to the confirmed 2025 amount.

**Closures.** 154 rural hospital closures and conversions since 2010 (86 complete closures, 68 converted closures) as of December 4, 2025, with Rural Emergency Hospital conversions counted separately and excluded from the closure total. Source: [UNC Cecil G. Sheps Center for Health Services Research](https://www.shepscenter.unc.edu/programs-projects/rural-health/rural-hospital-closures/). Higher figures in some secondary write-ups use different definitions and date windows and are not used here.

*This post is informational and journalistic, describing a public program and public records. It is not legal, financial, or medical advice. Figures are drawn from government and government-funded reports (MedPAC, the HRSA-funded Rural Health Information Hub, and the UNC Sheps Center) as of the dates cited; temporary provisions and annually indexed payment amounts change, and where a figure is from an industry source or is not independently confirmed, it is labeled as such.*

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