The Rural Emergency Hospital (REH) is not a hospital that lost its beds. It is a payment-and-licensure construct that forbids inpatient beds, excludes the facility from 340B drug pricing, caps the annual average length of stay at 24 hours, and requires a transfer agreement with a Level I or Level II trauma center that may sit in another state. Every one of those constraints is a design decision, not a clinical outcome. The designation became effective January 1, 2023, and as of October 2025 there were 42 REHs in the United States. The interesting question is not whether that number is large. It is which feedback loops the designation opens, which it closes, and which it leaves unmeasured.
What the designation actually is
Congress established the REH designation in December 2020 in Section 125 of the Consolidated Appropriations Act, 2021 (P.L. 116-260). The statutory trigger was the loss of essential services in rural areas due to hospital closures. The design response was to create a facility that provides 24-hour emergency and observation services, may elect to furnish other outpatient services, and cannot have inpatient beds except those in a distinct part unit licensed as a skilled nursing facility.
That last clause is the whole architecture in one sentence. An REH is defined by what it cannot have. The no-inpatient-bed rule is not a staffing or capacity preference; it is a condition of participation. A facility that wants to keep a medical-surgical floor cannot be an REH. A facility that wants to run swing beds cannot be an REH. The designation trades inpatient capacity for a different payment structure and a different regulatory identity.
The eligibility gate is narrower than the closure narrative suggests
Critical Access Hospitals and rural acute care, tribally-operated, and Indian Health Service hospitals with 50 or fewer beds that were open on December 27, 2020 are eligible to apply for REH status. Facilities that closed after December 27, 2020 are also eligible to apply for conversion. The date matters because it fixes the universe of potential converters. A hospital that closed in 2019 is not in the eligible set. A hospital that closed in 2021 is.
Location eligibility runs through the Office of Management and Budget’s Core Based Statistical Areas. CMS identifies micropolitan and noncore counties as rural under section 1886(d)(2)(D) of the Social Security Act. A facility can use the Am I Rural? tool as a first step, but that report is not a guarantee of REH eligibility. The determination is a CMS classification, not a self-assessment. This is the first place where the designation’s reach is set by an administrative boundary rather than by clinical need.
The payment mechanism is a swap, not a subsidy
REHs receive the Outpatient Prospective Payment System rate plus 5% for all outpatient department services provided to Medicare patients. Laboratory services, Skilled Nursing Facility services provided in a distinct part unit, and other services not considered REH services are paid under their respective fee schedules and do not receive the additional 5%. On top of the outpatient bump, each REH received a monthly facility payment of $285,625.90 in 2025, indexed to the hospital market basket increase. A November 2023 final rule enabled Indian Health Service facilities that convert to REH status to be paid under the IHS All-Inclusive Rate for Medicare outpatient services instead of OPPS.
The monthly facility payment is the part that looks like a subsidy. The 5% outpatient bump is the part that looks like an incentive. But the swap is what matters: the facility gives up inpatient reimbursement, swing-bed revenue, and 340B eligibility, and receives a fixed monthly payment plus a modest outpatient increment. Whether that trade is favorable depends on outpatient volume and payer mix. The Rural Health Information Hub states plainly that REH status does not guarantee a better financial situation for hospitals that choose to convert. That is not a hedge. It is the correct description of a payment design whose sign depends on local volume.
The two revenue losses that drive conversion decisions
The Rural Emergency Hospital Technical Assistance Center’s financial modeling work identifies the loss of swing beds and 340B program revenue as common concerns among hospitals exploring conversion. These are not incidental side effects. They are the two revenue lines that historically cross-subsidized low-volume rural inpatient care.
Swing beds let a small rural hospital use the same physical bed for acute care or skilled nursing depending on demand. That flexibility is what makes a low-census inpatient unit financially survivable. Remove it and the facility loses the ability to smooth census across two payment categories. The 340B program lets certain eligible facilities purchase outpatient drugs at reduced cost. The Consolidated Appropriations Act, 2021 did not add REHs to the list of eligible facilities. Remove it and the facility loses the margin on outpatient drug administration, which for some rural hospitals is the difference between a positive and negative operating margin.
The mechanism is the same in both cases: the designation strips the facility of revenue lines that depend on inpatient or pharmacy volume, and replaces them with a fixed monthly payment plus an outpatient percentage bump. The fixed payment does not scale with the losses. The outpatient bump does not apply to the drugs. Whether the swap nets positive is an empirical question about the facility’s own service mix, which is why the designation is financially indeterminate by construction rather than by implementation failure.
State licensure is the real gate, not CMS certification
Because the REH is a new provider type, state governments must modify existing laws and regulations to accommodate the designation. Some states have existing laws and regulations that can apply to REHs. If a state licenses REHs under the same rules as other facilities, the REH must comply with those rules. If a state’s rules are not compatible with the Medicare REH Conditions of Participation, the facility will not be able to operate as an REH.
This inverts the usual federal-preemption intuition. A facility can meet every federal Condition of Participation and still be unable to operate as an REH because its state has not created the provider type or has mapped REH onto incompatible facility rules. The federal benefit is contingent on state legislative labor. The conversion timeline is set in statehouses, not in Baltimore. The National Conference of State Legislatures maintains a Health Costs, Coverage and Delivery Database that tracks which states have proposed and enacted laws regarding REH licensure. That database is the tracking instrument for this gate, and it is the first place an analyst should look before modeling a conversion.
The licensure conflict is not a paperwork delay. It is a structural dependency. A state that has not enacted an REH licensure category cannot license an REH. A state that licenses REHs under acute-care hospital rules may impose staffing, bed, or service requirements that conflict with the no-inpatient-bed rule or the 24-hour average length-of-stay ceiling. The facility then faces a choice between complying with state law and complying with federal Conditions of Participation. There is no third option that preserves the REH designation.
The 24-hour ceiling is the binding operational constraint
REHs cannot exceed an annual average length of stay of 24 hours per patient. The clock begins at registration, check-in, or triage, whichever occurs first, and ends upon discharge from the REH. This is an annual average, not a per-patient cap. A single patient who stays for two weeks does not automatically violate the condition, but that patient’s days are amortized across the entire year’s census. In a facility with low volume, one extended psychiatric or rehabilitation observation can push the annual average over the ceiling.
CMS acknowledges that patients in need of inpatient psychiatric or rehabilitation services may need to remain at an REH for observation for several days or weeks if an inpatient bed is not immediately available. In the July 2022 proposed rule, CMS stated it did not anticipate that circumstance would happen frequently enough to affect the annual average. In the November 2022 final rule, CMS stated that REHs are expected to maintain documentation on attempts to transfer patients and other reasons for extended lengths of patient stays. CMS will review and consider that information if the average annual length of stay exceeds 24 hours.
Read that sequence carefully. CMS acknowledges the clinical scenario, predicts it will be rare, and then builds a documentation requirement for when it is not rare. The documentation requirement is the tell. The agency knows the ceiling can be breached by a single patient in a low-volume facility, and it has created a paper trail to adjudicate the breach after the fact. The operational release valve is the transfer agreement.
The transfer agreement rewires the referral network
An REH is required to have a transfer agreement with at least one Medicare-certified hospital designated as a Level I or Level II trauma center. The agreement exists to ensure that patients can receive emergency medical care not available at the REH. The Level I or Level II trauma center does not have to be in the same state as the REH. REHs may also have agreements with hospitals that are not designated as Level I or Level II trauma centers, but the mandatory agreement is with a trauma center.
This is the mechanism that rewires the referral network. Before conversion, a rural hospital’s transfer patterns are shaped by proximity, longstanding clinician relationships, and payer networks. After conversion, the REH must have a formal agreement with a Level I or Level II trauma center. That center may be the nearest tertiary hospital, or it may be across a state line. The requirement does not specify proximity. It specifies capability.
The consequence is that an REH can be formally compliant while its actual transfer pathway crosses a state line, a payer boundary, and a different EMS jurisdiction. The receiving trauma center may be in a different Medicaid program, a different insurance market, and a different public health reporting system. Any analysis of REH access that uses in-state hospital distance as the proxy will misstate the network. The network is defined by the agreement, not by the map.
The transfer agreement also interacts with the length-of-stay ceiling. When an REH cannot place a patient in an inpatient bed, the patient remains in observation. The REH documents the transfer attempts. The annual average length of stay rises. The documentation is the evidence that the REH tried to transfer. The trauma center’s capacity is the variable the REH does not control. In a region where the Level I or Level II center is itself at capacity, the REH’s length-of-stay ceiling becomes a function of another facility’s bed availability.
Staffing is a condition, not a preference
The emergency department of an REH must be staffed 24 hours a day, 7 days a week. A doctor of medicine or osteopathy, a physician assistant, a nurse practitioner, or a clinical nurse specialist with training or expertise in emergency care must always be onsite or on-call and available onsite within 30 minutes, or within 60 minutes if certain frontier or remote area criteria are met. REHs must meet the Critical Access Hospital Condition of Participation for Emergency Services. The governing body may elect to grant nurse practitioners and physician assistants medical staff privileges in accordance with state scope-of-practice laws.
That last sentence is another state-law dependency. The federal condition permits the election. The state scope-of-practice statute determines whether the election is available. A state that restricts nurse practitioner or physician assistant privileges can make the federal staffing flexibility unusable. The REH then must staff the emergency department with physicians, which in a rural labor market may be the difference between operating and not operating.
The measurement gap: REHQR collects but does not price
REHs must report data on selected Hospital Outpatient Quality Reporting Program measures for the REH Quality Reporting (REHQR) Program. Participation in REHQR is used to assess compliance with program requirements. The REHQR program does not currently include an associated payment adjustment.
This is the feedback loop that is missing. In most Medicare quality programs, reporting is tied to a payment adjustment, which creates a financial consequence for measured performance. REHQR collects the data and assesses compliance, but it does not attach a payment consequence to the quality signal. The designation’s performance is therefore not priced. If the goal is to learn whether the no-inpatient-beds model works, the current measurement architecture cannot answer it. The data exists. The consequence does not.
The gap matters because the REH designation is a natural experiment. It tests whether a facility can maintain emergency and outpatient capacity without inpatient beds. The answer depends on transfer network capacity, state licensure, outpatient volume, and payer mix. REHQR measures a slice of outpatient quality. It does not measure transfer times, transfer success rates, or the clinical outcomes of patients who leave the REH for a trauma center. It does not measure what happens to the patient who cannot be transferred. Without those measures, the designation’s performance remains an open question that the current reporting architecture is not designed to close.
What the evidence does not support
The retrieved sources do not measure REH effects on patient outcomes, mortality, transfer times, or access. They do not establish that conversion improves or harms financial outcomes. They do not support a claim about how many hospitals will convert, because the estimates rest on limited data and different selection criteria yield different potential converters. The March 2024 MedPAC Report to Congress describes the characteristics of the 21 hospitals that converted in the first year of the designation, including hospital type, prior Medicare payment designation, distance to the nearest general acute care hospital, and inpatient and outpatient visit trends. That report is the place to look for first-year descriptive data, not for causal claims.
The honest summary is that the REH designation is a payment-and-licensure construct whose financial sign depends on local volume, whose operational viability depends on a transfer agreement with a trauma center that may be out of state, and whose performance is not currently priced by the quality reporting program that applies to it. Those are design facts, not implementation failures. They are also the places where redesign would have the most leverage.
FAQ
Can an REH have any inpatient beds at all?
An REH cannot have inpatient beds except those furnished in a distinct part unit licensed as a skilled nursing facility. The SNF distinct part unit is the only inpatient bed exception in the source material.
Does an REH have to transfer every patient who needs inpatient care?
The REH must have a transfer agreement with at least one Medicare-certified Level I or Level II trauma center. CMS acknowledges that patients needing inpatient psychiatric or rehabilitation services may remain at an REH for observation for several days or weeks if an inpatient bed is not immediately available. The REH is expected to document transfer attempts and reasons for extended stays.
Is the monthly facility payment the same for every REH?
Each REH, including IHS-REHs, received $285,625.90 per month in 2025. The payment increases each year by the same percentage as the hospital market basket increase. IHS facilities that convert may instead be paid under the IHS All-Inclusive Rate for Medicare outpatient services.
Why would a hospital not convert to REH status?
The loss of swing beds and 340B program revenue are common concerns identified in the REH Technical Assistance Center’s financial modeling work. REH status does not guarantee a better financial situation. A facility must model its own outpatient volume and payer mix to determine whether the swap is favorable.
Where can I find the current list of REHs?
The North Carolina Rural Health Research Program maintains a list of Rural Emergency Hospitals with hospital name, address, previous Medicare payment designation, and effective date of REH status. The HRSA Data Warehouse contains a searchable database of CMS facilities updated quarterly. The CMS Rural Emergency Hospital List dataset is also published on data.cms.gov.
Does REHQR affect payment?
No. REHs must report selected Hospital Outpatient Quality Reporting Program measures for the REHQR Program. Participation is used to assess compliance with program requirements. The REHQR program does not currently include an associated payment adjustment.