Challenges in predicting future high-cost patients for care management interventions.

BACKGROUND: To test the accuracy of a segmentation approach using claims data to predict Medicare beneficiaries most likely to be hospitalized in a subsequent year. METHODS: This article uses a 100-percent sample of Medicare beneficiaries from 2017 to 2018. This analysis is designed to illustrate the actuarial limitations of person-centered risk segmentation by looking at the number and rate of hospitalizations for progressively narrower segments of heart failure patients and a national fee-for-service comparison group. Cohorts are defined using 2017 data and then 2018 hospitalization rates are shown graphically. RESULTS: As the segments get narrower, the 2018 hospitalization rates increased, but the percentage of total Medicare FFS hospitalizations accounted for went down. In all three segments and the total Medicare FFS population, more than half of all patients did not have a hospitalization in 2018. CONCLUSIONS: With the difficulty of identifying future high utilizing beneficiaries, health systems should consider the addition of clinician input and 'light touch' monitoring activities to improve the prediction of high-need, high-cost cohorts. It may also be beneficial to develop systemic strategies to manage utilization and steer beneficiaries to efficient providers rather than targeting individual patients.

Surgical Episodes of Care for Price Transparency Using the Episode Grouper for Medicare.

OBJECTIVE: To explore the use of an episode grouper to more accurately identify the complete set of surgical services typically provided in a surgical episode of care and the corresponding range of prices, using colectomy for cancer as the example. BACKGROUND: Price transparency is an important policy issue that will require surgeons to better understand the components and cost of care. METHODS: This study uses the Episode Grouper for Medicare business logic to construct colectomy surgical episodes of care for cancer using Medicare claims data for the Boston Hospital Referral Region from 2012 to 2015. Descriptive statistics show the mean reimbursement based on patient severity and stage of surgery, along with the number of unique clinicians billing for care and the mix of services provided. RESULTS: The Episode Grouper for Medicare episode grouper identified 3182 colectomies in Boston between 2012 and 2015, with 1607 done for cancer. The mean Medicare allowed amount per case is $29,954 and varies from $26,605 to $36,850 as you move from low to high-severity cases. The intrafacility stage is the most expensive ($23,175 on average) compared with the pre ($780) and post ($6,479) facility stages. There is tremendous heterogeneity in the service mix. CONCLUSIONS: Episode groupers are a potentially valuable tool for identifying variations in service mix and teaming patterns that correlate with a total price. By looking at patient care holistically, stakeholders can identify opportunities for price transparency and care redesign that have heretofore been hidden.

State Variation in the Utilization of Nurse Practitioner-Provided Home-Based Primary Care: A Medicare Claims Analysis.

Nurse practitioners (NPs) provide an increasing proportion of home-based primary care, despite restrictive scope of practice laws in approximately one half of states. We examined the relationship between scope of practice laws and state volume of NP-provided home-based primary care by performing an analysis of 2018 to 2019 Medicare claims. For each state we calculated the proportion of total home-based primary care visits by NPs and the proportion of all NPs providing home-based primary care. We used the 2018 American Association of Nurse Practitioners classification of state practice environment. We performed chi-square tests to assess the significance between volume and practice environment. We found that 42% of home-based primary care is delivered by NPs nationally, but substantial variation exists across states. We did not find a discernible or statistically significant pattern of uptake of NP-provided home-based primary care across full, reduced, or restricted states. [Journal of Gerontological Nursing, 49(5), 11-17.].

Estimating the Primary Care Workforce for Medicare Beneficiaries Using an Activity-Based Approach.

BACKGROUND: The enumeration of the primary care workforce relies on potentially inaccurate specialty designations sourced from licensure registries and clinician surveys. OBJECTIVE: To use an activity-based measure of primary care to estimate the number of physicians, nurse practitioners (NPs), and physician assistants (PAs) providing primary care to Medicare beneficiaries. DESIGN: Observational study using Medicare fee-for-service (FFS) claims data. SUBJECTS: All clinicians in the US billing Medicare in 2019 and their fee-for-service Medicare patients. MAIN MEASURES: We construct three measures that together distinguish primary care from specialty clinicians: (1) presence of evaluation and management (E&M) services in a setting consistent with primary care, (2) the dispersion of clinical care across International Classification of Diseases-10 (ICD-10) chapters, and (3) the extent of provided services that are atypical of primary care (e.g., surgical procedure). We apply parameters to the measures to identify the clinicians likely providing primary care and compare the resulting classifications across provider type. KEY RESULTS: Of physicians with at least 50 Medicare beneficiaries, 19-22% provide primary care. Of medical generalists (i.e., family medicine, internal medicine) with at least 50 beneficiaries, 61-68% provide primary care. We estimate that 40-45% of NPs and 27-30% of PAs meeting the panel size threshold are primary care providers in FFS Medicare. CONCLUSIONS: Our findings suggest that based on a primary care practice style, the number of primary care physicians in FFS Medicare is likely smaller than conventional estimates. However, compared to prior estimates, the number of primary care NPs is larger and the number of PAs is similar.

Early implementation of full-practice authority: A survey of Massachusetts nurse practitioners.

BACKGROUND: In January 2021, Massachusetts granted nurse practitioners (NPs) full-practice authority (FPA). Little is known about how FPA changes the day-to-day work of NPs. PURPOSE: To examine changes in practice barriers and care delivery in the early stages of FPA. METHODOLOGY: Descriptive analysis of a web-based survey of clinically active NPs in Massachusetts from October to December 2021, using Fisher exact tests to examine the associations between the perception that FPA improved work and other variables. RESULTS: Survey response rate was 50.3% ( N = 147). Overall, 79% of NPs believe that clinical work is unchanged by FPA. Practicing outside institutions is a significant predictor of FPA improving work ( p < .05). Larger proportions of respondents feel that efficiency (22%), patient centeredness (20%), and timeliness (20%) are improved by FPA compared with effectiveness (16%), equity (14%), and safety (10%). Almost half of those reporting that FPA improves overall care also report improved efficiency (50%, p < .0001), but only 22% report improved safety ( p < .05). Of those believing that FPA improved work, a minority no longer need physician review of new controlled substance prescriptions (29%, p < .01), a practice agreement (32%, p < .05), or physician signature on clinical documentation (22%, p < .05). CONCLUSIONS: Almost 1 year after FPA was passed in Massachusetts, the large majority of NPs report no changes in their day-to-day work, suggesting that FPA implementation is slow. IMPLICATIONS: Concerted efforts by regulators, employers, and individual NPs are needed to ensure that legislated FPA is effectively implemented inside organizations and among payers.

Validation and Repeatability of the Epidermolysis Bullosa Eye Disease Index in Dystrophic Epidermolysis Bullosa.

PURPOSE: Dystrophic epidermolysis bullosa (DEB) is a devastating condition that causes painful corneal abrasions and vision loss. Epidermolysis Bullosa Eye Disease Index (EB-EDI) for the first time captures and quantifies EB-specific assessment of ocular symptoms and activities of daily living scales. This survey will become critical in developing new interventions on patients' quality of life. METHODS: Three-part set of the EB-EDI baseline, EB-EDI interval, and Ocular Surface Disease Index (OSDI) survey was distributed to 92 patients with DEB who previously reported eye symptoms on previous surveys. It was then posted online through several EB patient organizations. We compared the EB-EDI with the gold standard OSDI and examined the repeatability of the EB-EDI over a 7- to 15-day interval. RESULTS: Of the 45 individuals who initially responded, 30 of 45 (67%) completed the surveys sent 7 to 15 days later. The age of participants ranged from 6 to 51 years (mean 21 ± 15 years), and 60% (18 of 30) of participants were younger than 18 years. The overall Cronbach alpha values for the subscales of EB-EDI baseline and interval tools presented a good internal consistency (≥0.7). From 2 visits, the domain scores of EB-EDI baseline (0.94) and interval tools (0.83) were shown to have excellent test-retest reliability (intraclass correlation coefficient >0.8). By comparison, OSDI had the intraclass correlation coefficient score of 0.72 ± 0.11. The convergent validation analysis showed that correlations between the domain scores of EB-EDI baseline and interval tools and the subscales of the OSDI reached the hypothesized strength. CONCLUSIONS: Based on a 30-person repeated-measures study, we found that the EB-EDI has excellent reliability and validity specifically in patients with DEB.

Emergency Removal of Supervision Requirements for Psychiatric Mental Health Nurse Practitioners: A Mixed-Methods Survey.

OBJECTIVE: Physician supervision of nurse practitioners (NPs) was temporarily waived in Massachusetts in response to a state of emergency due to the COVID-19 pandemic. The authors examined the impact of the scope-of-practice changes and pandemic-related demands on psychiatric mental health NPs (PMHNPs) during the state's first COVID-19 surge. METHODS: A mixed-methods Web-based survey was conducted in May and June of 2020. Fisher's exact test was used to compare associations across certification types, and inductive content analysis was applied to open-ended responses. RESULTS: The survey response rate was 41% (N=389 of 958), consisting of 26 PMHNPs and 363 other NPs. Compared with other NPs, PMHNPs were significantly more likely to work in a telehealth setting (42% vs. 11%, p<0.001), to spend more time working during the initial surge (50% vs. 26%, p<0.05), and to believe that the waiver improved clinical work (52% vs. 25%, p<0.01). Content analysis of PMHNPs' open-ended responses identified four themes: the supervision waiver reduced burden on PMHNPs, collaboration and mentorship models persisted, the pandemic exacerbated the already high demand for psychiatric care, and telehealth helped meet the high demand for such care. CONCLUSIONS: PMHNPs may be more sensitive to the scope-of-practice changes and telehealth expansion than other NPs because of the constraints of the psychiatrist shortage and high relative uptake of telehealth in psychiatric care. The interactions of workforce supply, telehealth expansion, and scope-of-practice laws are important to consider in the development of policies to improve access to mental health care.

Rural-urban prescribing patterns by primary care and behavioral health providers in older adults with serious mental illness.

BACKGROUND: Older adults with serious mental illness (SMI) often have multiple comorbidities and complex medication schedules. Shortages of behavioral health specialists (BHSs), especially in rural areas, frequently make primary care providers (PCPs) the only clinician managing this complex population. The aim of this study was to describe rural/urban psychiatric medication prescribing in older adults with SMI by PCPs and BHSs, and by clinician type. METHODS: This retrospective descriptive analysis used 2018 Medicare data to identify individuals with a bipolar, major depression, schizophrenia, or psychosis diagnosis and examined medication claims for antianxiety, antidepressants, antipsychotics, hypnotics, and anticonvulsants. Descriptive statistics summarized percentage of medications provided by PCPs and BHSs stratified by rural and urban areas and by drug class. Additional analyses compared psychiatric prescribing patterns by physicians, advanced practice registered nurses (APRNs), and physician assistants (PAs). RESULTS: In urban areas, PCPs prescribed at least 50% of each psychiatric medication class, except antipsychotics, which was 45.2%. BHSs prescribed 40.7% of antipsychotics and less than 25% of all other classes. In rural areas, percentages of psychiatric medications from PCPs were over 70% for each medication class, except antipsychotics, which was 60.1%. Primary care physicians provided most psychiatric medications, between 36%-57% in urban areas and 47%-65% in rural areas. Primary care APRNs provided up to 13% of prescriptions in rural areas, which was more than the amount prescribed by BHS physicians, expect for antipsychotics. Psychiatric mental health APRNs provided up to 7.5% of antipsychotics in rural areas, but their prescribing contribution among other classes ranged between 1.1%-3.6%. PAs provided 2.5%-3.4% of medications in urban areas and this increased to 3.9%-5.1% in rural areas. CONCLUSIONS: Results highlight the extensive roles of PCPs, including APRNs, in managing psychiatric medications for older adults with SMI.

Can clinician champions reduce potentially inappropriate medications in people living with dementia? Study protocol for a cluster randomized trial.

BACKGROUND: For people living with dementia (PLWD) the overuse of potentially inappropriate medications (PIMs) remains a persistent problem. De-prescribing trials in the elderly have mixed results. Clinician champions may be uniquely suited to lead efforts to address this challenge. Here we describe the study protocol for a 24-month embedded pragmatic cluster-randomized clinical trial within two accountable care organizations (ACOs) of such a clinician champion intervention. The specific aims are to (1) assess the effectiveness of a clinician champion on de-implementing PIMs in PLWD, (2) determine if the intervention is associated with a reduction in emergency department (ED) visits and hospitalizations attributed to a fall, and (3) examine five implementation outcomes: appropriateness, feasibility, fidelity, penetration, and equity. METHODS/DESIGN: Two ACOs agreed to participate: United States Medical Management (USMM) and Oschner Health System. The unit of randomization will be the primary care clinic. A clinician champion will be recruited from each of the intervention clinics to participate in a 6-month training program and then work with clinicians and staff in their clinic for 12 months to reduce the use of PIMs in their PLWD population. For aims 1 and 2, Medicare claims data will be used to assess outcomes. The outcome for aim #1 will be medication possession rates per quarter, for the three therapeutic classes of PIMs among patients with dementia in intervention clinics versus control clinics. For aim #2, we will assess the incidence of falls using a previously validated algorithm. For both aims 1 and 2, we will construct hierarchical models with time period observations nested within patient using generalized estimating equations (GEE) with robust standard errors. The key variable of interest will be the treatment indicator assigned based on practice. For aim #3, we will conduct qualitative thematic analysis of documentation by the clinician champions in their project workbooks to evaluate the five implementation outcomes. DISCUSSION: This embedded pragmatic trial will add to our existing knowledge regarding the effectiveness of a clinician champion strategy to de-prescribe potentially inappropriate medication among patients with dementia as well as its appropriateness, feasibility, fidelity, penetration, and equity. TRIAL REGISTRATION: Clinicaltrials.gov NCT05359679 , Registered May 4, 2022.

Primary Care Nurse Practitioner Work Environments and Hospitalizations and ED Use Among Chronically Ill Medicare Beneficiaries.

BACKGROUND: Nurse practitioners (NPs) play a critical role in delivering primary care, particularly to chronically ill elderly. Yet, many NPs practice in poor work environments which may affect patient outcomes. OBJECTIVE: We investigated the relationship between NP work environments in primary care practices and hospitalizations and emergency department (ED) use among chronically ill elderly. RESEARCH DESIGN: We used a cross-sectional design to collect survey data from NPs about their practices. The survey data were merged with Medicare claims data. SUBJECTS: In total, 979 primary care practices employing NPs and delivering care to chronically ill Medicare beneficiaries (n=452,931) from 6 US states were included. MEASURES: NPs completed the Nurse Practitioner-Primary Care Organizational Climate Questionnaire-a valid and reliable measure for work environment. Data on hospitalizations and ED use was obtained from Medicare claims. We used Cox regression models to estimate risk ratios. RESULTS: After controlling for covariates, we found statistically significant associations between practice-level NP work environment and 3 outcomes: Ambulatory Care Sensitive (ACS) ED visits, all-cause ED visits, and all-cause hospitalizations. With a 1-unit increase in the work environment score, the risk of an ACS-ED visit decreased by 4.4% [risk ratio (RR)=0.956; 99% confidence interval (CI): 0.918-0.995; P=0.004], an ED visit by 3.5% (RR=0.965; 99% CI: 0.933-0.997; P=0.005), and a hospitalization by 4.0% (RR=0.960;99% CI: 0.928-0.993; P=0.002). There was no relationship between NP work environment and ACS hospitalizations. CONCLUSION: Favorable NP work environments are associated with lower hospital and ED utilization. Practice managers should focus on NP work environments in quality improvement strategies.

Characteristics of home-based care provided by accountable care organizations.

OBJECTIVES: To describe the use of home-based services in accountable care organizations (ACOs). STUDY DESIGN: Cross-sectional analysis of 2019 ACO survey. METHODS: We analyzed surveys completed by 151 ACOs describing the characteristics of home-based care programs serving high-need, high-cost patients. We linked survey results to publicly available information about ACO characteristics, governance, and risk model participation. RESULTS: Twenty-five percent of respondent ACOs had formal home-based care programs, 25% offered occasional home visits, and 17% were actively developing new programs. Home-based primary care was the most common program type. Half of programs were established within the past 3 years. The programs utilized multidisciplinary care teams, but two-thirds had fewer than 500 visits annually. Funding sources included direct billing for services, health system subsidies, and ACO shared savings. A majority of respondents expressed interest in expanding services but were concerned about their ability to demonstrate a return on investment (ROI), which was reported as a major or moderate challenge by three-quarters of respondents. CONCLUSIONS: ACOs deliver a diverse array of home-visit services including primary care, acute medical care, palliative care, care transitions, and interventions to address social determinants of health. Many services provided are not billable, and therefore ACO leaders are hesitant to fund expansions without strong evidence of ROI. Expanding Medicare ACO home-visit waivers to all risk-bearing ACOs and covering integrated telehealth services would improve the financial viability of these programs.

Use of electronic health record systems in accountable care organizations.

OBJECTIVES: To assess the ability of accountable care organizations (ACOs) to use electronic health record (EHR) data for quality. STUDY DESIGN: Cross-sectional study of ACOs participating in the Medicare Shared Savings Program (MSSP). METHODS: A national survey of MSSP ACOs included questions on the number of EHR systems used across all providers in the ACO and barriers to reporting EHR-based quality measures. RESULTS: Just 9% of ACOs use a single EHR system, whereas 77% use 6 or more EHR systems. The more EHR systems an ACO uses, the less likely it is to report having the infrastructure to aggregate EHR data and the more concerned it is about the short-term viability and accuracy of EHR-based quality measures. CONCLUSIONS: ACOs have diverse structures that often result in the usage of multiple EHR systems. This has the potential to cause serious delays when CMS begins requiring ACOs to report their quality measures through their EHRs in 2022.

Nurse practitioners' perception of temporary full practice authority during a COVID-19 surge: A qualitative study.

BACKGROUND: At the beginning of the COVID-19 pandemic in the United States, 22 state governors temporarily waived physician supervision of nurse practitioners to expand access to health care during the state of emergency. OBJECTIVE: We examined the nurse practitioner perception of the simultaneous scope of practice changes and the exigent pandemic demands during the initial COVID-19 surge in Massachusetts. METHODS: Qualitative descriptive design using content analysis of open-ended responses to a web-based survey of Massachusetts nurse practitioners conducted in May & June 2020. RESULTS: Survey response rate was 40.6 percent (N = 389). Content analysis identified four themes including: 1) State waivers enabled more control over practice and more expedited care, 2) State waiver did not change practice either because of pre-established independence or employers not changing policy, 3) Perception of nurse practitioner role as both versatile and disposable and 4) Telehealth increased access to care and created an autonomous setting. CONCLUSIONS: Although findings suggest fewer barriers in some areas, the temporary removal of state-level restrictions alone is not sufficient to achieve immediate full scope of practice for nurse practitioners. There is a need for regulatory frameworks that optimize the capacity of the advanced practice nursing workforce to respond to global health emergencies. US-based policymakers and healthcare organizations should revise outdated scope of practice policies and capitalize on telehealth technology to utilize the full extent of nurse practitioners. Likewise, nursing leaders should be a voice for nurse practitioners to more effectively and safely maximize the nurse practitioner contribution during emergency responses. In countries where the role is under development, regulators can leverage these findings to establish modernized nurse practitioner scope of practice policies from the outset.

Nurse practitioner-owned practices and value-based payment.

BACKGROUND: The United States is steadily shifting away from volume-based payments toward value-based payment for health care. The nursing model's emphasis on high-value care, such as disease prevention and health maintenance, ideally positions nurse practitioner (NP) practice owners to contribute to the goals of value-based care. However, little is known about NP participation in value-based care. PURPOSE: To better understand NP-owned practice participation in value-based care. METHODOLOGY: Using convenience sampling, we developed a registry of NP owned practices, which we used to conduct a web-based survey from November 2019 to February 2020. RESULTS: Of the 47 NP-owner respondents, 40 practice in primary or specialty care. Practices are relatively small with a mean clinical staff of 4 full-time equivalent (FTE; range: 1-17), mean total staff of 7 FTE (1-28.5), and with a mean of 325 patient visits annually. A third participate in value-based payment arrangements, whereas a half are considering and three quarters are knowledgeable about value-based payment arrangements. Over 70% of practice owners report lack of knowledge, lack of financial protections, and lack of payer partnership as barriers to participation in value-based payment models. CONCLUSIONS: NP practice owners face many challenges to taking on risk, including insufficient patient volume. IMPLICATIONS: Joining together may allow small NP practices to participate in and thrive under value-based payment. Reducing the barriers and regulation of all NPs will enable the health care system to capitalize on the nursing model to meet the goals of value-based care.

The Effect of Supervision Waivers on Practice: A Survey of Massachusetts Nurse Practitioners During the COVID-19 Pandemic.

BACKGROUND: While optimal utilization of the nurse practitioner (NP) workforce is an increasingly popular proposal to alleviate the growing primary care shortage, federal, state, and organizational scope of practice policies inhibit NPs from practicing to the full extent of their license and training. In March of 2020, NP state-specific supervisory requirements were temporarily waived to meet the demands of the coronavirus disease 2019 (COVID-19) pandemic in Massachusetts. OBJECTIVE: The objective of this study was to examine the impact of temporarily waived state practice restrictions on NP perception of care delivery during the initial surge of the COVID-19 pandemic in Massachusetts. RESEARCH DESIGN: Mixed methods descriptive analysis of a web-based survey of Massachusetts NPs (N=391), conducted in May and June 2020. RESULTS: The vast majority (75%) of NPs believed the temporary removal of practice restriction did not perceptibly improve clinical work. Psychiatric mental health NPs were significantly more likely than other NP specialties to believe the waiver improved clinical work (odds ratio=6.68, P=0.001). NPs that experienced an increase in working hours during the pandemic surge were also more likely to report a positive effect of the waiver (odds ratio=2.56, P=0.000). CONCLUSIONS: Temporary removal of state-level practice barriers alone is not sufficient to achieve immediate full scope of practice for NPs. The successful implementation of modernized scope of practice laws may require a collective effort to revise organizational and payer policies accordingly.

The Impact of Tai Chi Exercise on Health Care Utilization and Imputed Cost in Residents of Low-Income Senior Housing.

BACKGROUND/OBJECTIVES: This study was designed to test the impact of Tai Chi (TC) on healthcare utilization and cost in older adults living in low-income senior housing. We hypothesized that TC would improve overall health enough to reduce the use of emergency department (ED) and inpatient services. DESIGN: Cluster randomized controlled trial with randomization at the housing site level. SETTING: Greater Boston, Massachusetts. PARTICIPANTS: The study includes 6 sites with 75 individuals in the TC treatment condition and 6 sites with 67 individuals in the health education control condition. INTERVENTION: Members of the treatment group received up to a year-long intervention with twice weekly, in-person TC exercise sessions along with video-directed exercises that could be done independently at home. The comparison group received monthly, in-person healthy aging education classes (HE). Study recruitment took place between August, 2015 and October, 2017. Key outcomes included acute care utilization (inpatient stays, observation stays and emergency department visits). In addition, the cost of utilization was estimated using the age, sex and race adjusted allowed amount from Medicare claims for a geographically similar population aged ≥ 65. RESULTS: The results suggested a possible reduction in the rate of ED visits in the TC group vs. controls (rate ratio = 0.476, p-value = 0.06), but no findings achieved statistical significance. Adjusted estimates of imputed costs of ED and hospital care were similar between TC and HE, averaging approximately $3,000 in each group. CONCLUSION: ED utilization tended to be lower over 6 to 12 months of TC exercises compared to HE in older adults living in low-income housing, although estimated costs of care were similar.

Low-Value Back Imaging in the Care of Medicare Beneficiaries: A Comparison of Nurse Practitioners and Physician Assistants.

Little is known about practice pattern differences between nurse practitioners (NPs) and physician assistants (PAs). We compared the rates of low-value back images ordered by NPs and PAs. For this comparison, we used 2012-2013 Medicare Part B claims for all beneficiaries in 18 hospital referral regions and a measure of low-value back imaging from the Choosing Wisely recommendations. Models included a random clinician effect and fixed effects for beneficiary age, disability, Elixhauser comorbidities, clinician type, the emergency department setting, and region. NPs (N = 234) order low-value back images significantly less than PAs (N = 204) (NPs 25.5% vs. PAs 39.2%, p < .0001). Controlling for relevant factors, NPs are 10.0 percentage points (p < .0001) less likely to order a low-value back image than PAs. NPs and PAs have distinct patterns of low-value back imaging, which is likely a reflection of their different practice settings.

Inpatient rehabilitation facilities' hospital readmission rates for medicare beneficiaries treated following a stroke.

BACKGROUND: Stroke is the leading cause for admission to the nearly 1,200 Inpatient Rehabilitation Facilities (IRFs) nationally in the US. For many patients, post-acute care is an important component of their rehabilitation. Several quality measures have been publicly reported for post-acute care providers, including hospital readmissions. However, to date none have focused on specific medical conditions, limiting the usability for patients and quality improvement. OBJECTIVE: To assess hospital readmission rates for Medicare patients receiving inpatient rehabilitation following stroke and to identify risk factors in order to evaluate the feasibility of a stroke-specific hospital readmission measure. METHODS: Observational study analyzing national Medicare inpatient claims and administrative data to assess hospital readmissions. Using logistic regression, we calculated unadjusted and risk-standardized readmission rates, which adjusted for patient characteristics, including type of stroke and admission function, to capture stroke severity. RESULTS: Our national study included 116,073 fee-for-service Medicare beneficiary discharged from IRFs in 2013-2014 following stroke from 1,162 IRFs nationally. The observed hospital readmission rate among IRF patients following stroke was 11.6% and varied by patients' admission motor function. Patients with greater functional dependence had higher readmission rates on average. Lower admission function, hemorrhagic and other stroke types (relative to ischemic) were significantly associated with higher odds of hospital readmission. CONCLUSION: Results suggest it is feasible to assess hospital readmission rates among a stroke-cohort treated in IRFs. Stroke-focused quality measures would be useful to patients in selecting a provider and for providers in evaluating their stroke rehabilitation program outcomes. Secondary results suggest that admission function (FIM) capture stroke severity, a limitation with other claims-based stroke measures.