TPE and RAC Audit Support for Rural Emergency Hospital (REH): Rural Emergency Hospital Conditions of Participation Documentation

Rural Emergency Hospitals represent a distinct Medicare provider category, established to allow certain rural facilities to continue furnishing emergency and outpatient services without maintaining inpatient beds, and this designation carries its own specific conditions of participation addressing emergency services staffing, the prohibition on providing inpatient care beyond limited exceptions, and the annual per-patient average length of stay standard defining the category itself. Because REH is a relatively new provider type with conditions of participation distinct from both critical access hospitals and general acute care hospitals, a TPE or RAC review addressing REH compliance requires documentation demonstrating fluency with this specific, newer regulatory framework.

This article explains the core conditions of participation defining Rural Emergency Hospitals, the documentation elements supporting compliance with each condition, why this documentation area draws sustained TPE and RAC attention, and how REHs should structure an effective audit response. It closes with how HealthBridge US supports Rural Emergency Hospitals strengthening conditions of participation documentation.

The REH Definition and Its Foundational Length-of-Stay Standard

A Rural Emergency Hospital is an entity that operates for the purpose of providing emergency department services, observation care, and other specified outpatient medical and health services, in which the annual per-patient average length of stay does not exceed 24 hours. This 24-hour average length-of-stay standard represents a foundational element of the REH designation itself, distinguishing it from a traditional inpatient hospital, and documentation should reflect the facility’s ongoing tracking of this average across its full patient population, not merely individual patient encounters considered in isolation.

The Prohibition on Inpatient Services

REHs generally may not provide inpatient services, with limited exceptions such as post-hospital extended care services furnished in a distinct part skilled nursing facility unit, and documentation and facility operations should reflect clear adherence to this fundamental structural limitation. A chart review addressing REH compliance should specifically verify that patients are not held or treated in a manner inconsistent with the outpatient, limited-duration model this provider category is built around, since any pattern suggesting de facto inpatient care would conflict with the REH designation’s foundational premise.

The 24-Hour Emergency Services Condition

REHs must staff their emergency department 24 hours a day, seven days a week, with an individual or individuals competent in the skills needed to address emergency medical care, capable of receiving patients and activating appropriate medical resources to meet each patient’s needs, and must maintain availability of emergency laboratory services on this same 24/7 basis. Documentation should reflect staffing schedules demonstrating continuous 24/7 coverage without gaps, along with records confirming emergency laboratory service availability throughout all hours of operation.

Governance, Staffing, and Emergency Preparedness Conditions

Beyond the core emergency services and length-of-stay standards, REHs must satisfy conditions addressing governing body responsibilities, overall facility staffing adequate to the services furnished, and emergency preparedness planning consistent with broader Medicare emergency preparedness requirements applicable across provider types. Documentation supporting these conditions should reflect the facility’s governance structure, staffing plans corresponding to its actual scope of services, and a current, tested emergency preparedness plan addressing the specific risks relevant to the facility’s location and services.

Why REH Conditions of Participation Draw Sustained TPE and RAC Attention

Because REH represents a relatively new provider category with conditions of participation distinct from the more established critical access hospital and acute care hospital frameworks, reviewing contractors examine whether facilities newly designated as REHs have correctly adapted their documentation and operational practices to this specific framework, rather than continuing to apply documentation habits developed under a prior provider designation. Reviewers may specifically examine adherence to the 24-hour average length-of-stay standard, the prohibition on inpatient services, and the continuous 24/7 emergency staffing requirement, given how directly each of these conditions defines the REH category itself.

Building an Effective TPE or RAC Response

When a TPE or RAC review challenges REH conditions of participation compliance, the response should include documentation of the facility’s ongoing average length-of-stay tracking, staffing schedules demonstrating continuous 24/7 emergency department coverage, and records confirming the facility has not furnished inpatient services outside the limited permitted exceptions. Where a genuine documentation gap exists, such as a staffing schedule showing an isolated coverage gap, the facility should address this directly while providing whatever other contemporaneous documentation may help demonstrate its overall, ongoing compliance with the applicable conditions of participation.

Common REH Conditions of Participation Documentation Gaps

Several recurring gaps appear in REH compliance reviews. An absence of clear, ongoing average length-of-stay tracking across the full patient population, rather than only individual encounter-level documentation, represents a frequently cited issue, particularly at facilities relying on manual calculation methods rather than a systematic dashboard or tracking tool. Staffing schedules with gaps in 24/7 emergency department coverage, or an absence of documented emergency laboratory service availability during all operating hours, represent another significant gap, particularly during overnight or holiday periods when staffing coverage can be harder to maintain consistently. Patient encounters reflecting characteristics of de facto inpatient care inconsistent with the REH’s outpatient-focused designation round out a frequent finding in this area, along with distinct part skilled nursing facility unit records that are not clearly separated from the REH’s own outpatient encounter data.

Building a Recurring Internal Audit Addressing REH Conditions of Participation

REHs benefit from a recurring internal audit specifically verifying ongoing average length-of-stay tracking, reviewing staffing schedules for continuous 24/7 emergency coverage, and confirming that patient encounters remain consistent with the facility’s outpatient-focused designation. Facilities newly transitioning to REH status, whether from a prior critical access hospital or acute care hospital designation, should place particular emphasis on this recurring review during the initial period following transition, when staff may still be adapting to the new framework’s specific requirements.

Training Staff on the Distinctions Between REH and Prior Provider Designations

Because many REHs previously operated as critical access hospitals or small acute care hospitals before converting to this new designation, staff should receive targeted training specifically addressing how REH conditions of participation differ from the facility’s prior designation, particularly regarding the prohibition on inpatient services and the specific 24-hour average length-of-stay standard. Staff who understand these distinctions are better positioned to maintain documentation and operational practices consistent with the REH framework, rather than inadvertently continuing practices appropriate to the facility’s prior designation but inconsistent with its current REH status.

Calculating the Average Length of Stay Consistent With CMS Guidance

CMS has specified that the length-of-stay calculation begins with the patient’s registration, check-in, or triage, whichever occurs first, and ends with the patient’s discharge, defined as either the point when a physician or other appropriate clinician signs the discharge order or when the outpatient service is completed and documented in the medical record. Documentation systems should specifically capture these two timestamps for every patient encounter, supporting an accurate, ongoing calculation of the facility’s annual per-patient average rather than an estimate based on incomplete or inconsistently captured timing data.

Addressing Individual Encounters Exceeding 24 Hours

Because the 24-hour standard applies to the facility’s annual per-patient average rather than as an absolute cap on every single encounter, an REH may have individual patient encounters extending beyond 24 hours without necessarily violating the underlying condition, provided the facility’s overall annual average remains within the required standard. Documentation should nonetheless address the clinical basis for any encounter extending significantly beyond 24 hours, and facilities should monitor the frequency of such extended encounters to ensure they do not, in the aggregate, push the facility’s annual average beyond the required threshold.

Building a Dashboard Tracking the Facility’s Running Average Length of Stay

Given how directly the 24-hour average length-of-stay standard defines the REH category itself, facilities should implement a dashboard or similar tracking tool providing ongoing visibility into the facility’s current running average, allowing administrators to identify an upward trend well before it approaches the required threshold. This proactive monitoring approach positions facilities to investigate and address the underlying causes of a rising average, such as an increase in extended observation stays, before the facility’s compliance with this foundational standard becomes genuinely at risk.

Addressing the Distinct Part Skilled Nursing Facility Exception

Where an REH operates a distinct part skilled nursing facility unit as one of the limited permitted exceptions to the general prohibition on inpatient services, documentation should clearly distinguish services furnished within this distinct part unit from the REH’s own outpatient emergency and observation services, ensuring the two service lines remain separately identifiable within the facility’s records. A chart review addressing REH compliance should verify that patients receiving care within the distinct part unit are clearly documented as such, rather than blended into the same records used to track the REH’s own outpatient average length-of-stay calculation.

Coordinating Documentation Across Emergency, Observation, and Outpatient Service Lines

Because REHs may furnish emergency department services, observation care, and other specified outpatient services all within the same overall facility, documentation practices should clearly distinguish which specific service line applies to each patient encounter, supporting both the length-of-stay calculation and broader billing accuracy. A chart review should verify that patients transitioning between these service lines during a single visit, such as an emergency department patient subsequently placed in observation, have documentation clearly reflecting this transition and the corresponding time attributable to each phase of care.

Building a Transition Checklist for Facilities Converting to REH Status

Facilities in the process of converting from a prior provider designation to REH status should build a specific transition checklist addressing each of the conditions of participation discussed throughout this article, including staffing schedule adjustments supporting continuous 24/7 emergency coverage, documentation system updates supporting average length-of-stay tracking, and confirmation that any distinct part skilled nursing facility unit is properly documented as a distinct service line. A thorough transition checklist helps ensure the facility’s documentation and operational practices are fully aligned with REH-specific requirements from the effective date of conversion, rather than adapting these practices gradually over an extended period following the transition.

How HealthBridge US Supports Your Rural Emergency Hospital

Rural Emergency Hospital conditions of participation establish a distinct regulatory framework addressing emergency services staffing, the prohibition on inpatient services, and the foundational 24-hour average length-of-stay standard. HealthBridge US supports Rural Emergency Hospitals with conditions of participation documentation audits, staffing schedule review, and TPE/RAC audit response support. If your facility wants to strengthen conditions of participation documentation, verify average length-of-stay tracking, or needs support responding to an active TPE or RAC review, HealthBridge US is here to help — contact our team to discuss your facility’s compliance needs.

References

• Electronic Code of Federal Regulations. 42 CFR Part 485, Subpart E (Conditions of Participation: Rural Emergency Hospitals). https://www.ecfr.gov/current/title-42/chapter-IV/subchapter-G/part-485/subpart-E

• Electronic Code of Federal Regulations. 42 CFR § 485.516 (Condition of Participation: Emergency Services). https://www.ecfr.gov/current/title-42/chapter-IV/subchapter-G/part-485/subpart-E/section-485.516

• Centers for Medicare & Medicaid Services. “Rural Emergency Hospitals.” https://www.cms.gov/medicare/health-safety-standards/certification-compliance/rural-emergency-hospitals

• Centers for Medicare & Medicaid Services. “Conditions of Participation for Rural Emergency Hospitals and Critical Access Hospital CoP Updates” (Fact Sheet). https://www.cms.gov/newsroom/fact-sheets/conditions-participation-rural-emergency-hospitals-and-critical-access-hospital-cop-updates-cms-3419

• Centers for Medicare & Medicaid Services. “Additional Documentation Request.” https://www.cms.gov/data-research/monitoring-programs/medicare-fee-service-compliance-programs/medical-review-education/additional-documentation-request

• Centers for Medicare & Medicaid Services. Medicare Claims Processing Manual, Chapter 29 (Appeals). https://www.cms.gov/regulations-and-guidance/guidance/manuals/downloads/clm104c29.pdf

HealthBridge US is here to help. Our compliance specialists support Rural Emergency Hospitals with conditions of participation documentation review and TPE/RAC audit response — contact us to protect your facility’s reimbursement.