
Hospital Compare is a website that allows users to compare the quality of care provided by hospitals that voluntarily submit data. The website includes information on various aspects of care, including cardiovascular, emergency department care, infections, and patient safety. The data is provided by the Centers for Medicare and Medicaid Services (CMS) and individual hospitals, but it only includes Medicare-certified hospitals. As a result, some hospitals may not be listed on Hospital Compare if they are not Medicare-certified or if they choose not to submit their data. Additionally, the ratings provided by Hospital Compare do not account for the social risk of communities, which may impact how hospitals that serve disadvantaged populations are perceived.
| Characteristics | Values |
|---|---|
| Data source | Medicare-certified hospitals |
| Participants | Short-term acute care hospitals |
| Hospital Compare information | Quality measure information, process of care measures, outcome measures, patient experience of care |
| Hospital Compare display | Survey of Patients' Hospital Experiences |
| Data collection | Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) Survey |
| HCAHPS initiative | Provides a standardized survey instrument and data collection methodology for measuring patients' perspectives on hospital care |
| HCAHPS survey responses | Converted to linear mean scores for each HCAHPS measure and then adjusted for patient mix and mode of survey administration |
| HCAHPS star ratings | Hospitals are grouped into five star categories for each HCAHPS measure |
| Hospital Compare star ratings | Consumer-oriented website that provides information on how well hospitals provide care to their patients |
| Hospital Compare purpose | Allows consumers to select multiple hospitals and directly compare performance measure information related to heart attack, heart failure, pneumonia, surgery and other conditions |
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What You'll Learn
- Hospitals must be Medicare-certified to be included on Hospital Compare
- Hospitals voluntarily submit data on treatments for specific conditions
- Hospital Compare uses patient surveys to measure experiences and perspectives
- Ratings do not account for the social risk of communities and may penalize disadvantaged hospitals
- Hospital Compare displays outcome measures, reflecting the results of care

Hospitals must be Medicare-certified to be included on Hospital Compare
Hospital Compare was created through the combined efforts of the Centers for Medicare & Medicaid Services (CMS) and the Hospital Quality Alliance (HQA). The HQA, a public-private collaboration, was formed in December 2002 to promote the reporting of hospital quality of care. The HQA included organisations that represented consumers, hospitals, providers, employers, accrediting organisations, and federal agencies. The goal of the HQA was to make it easier for consumers to make informed healthcare decisions and to support efforts to improve quality in US hospitals.
The Hospital Compare website offers information on the quality and cost of care provided at Medicare-certified hospitals in the United States. The website includes a range of information, such as geographical distance, an overall star rating, patient experience scores, whether the hospital provides timely and effective care, complication rates, mortality rates, unplanned hospital visits (including readmission rates), effective treatment, and patient safety in psychiatric units.
The hospitals displayed on Hospital Compare are generally limited to acute care hospitals, acute care veteran's hospitals, Department of Defense hospitals, critical access hospitals, and children's hospitals. Most of the participants are short-term acute care hospitals. To be included on Hospital Compare, hospitals must submit data and meet the other requirements of the Hospital Inpatient Quality Reporting (IQR) Program and the Hospital Outpatient Reporting (OQR) Program. The Hospital IQR Program was established by Section 501(b) of the Medicare Modernization Act of 2003.
The Hospital Compare website provides quality measure information, such as process-of-care measures and outcome measures. Process-of-care measures indicate whether a healthcare provider gives recommended care based on guidelines, standards of care, or practice parameters. These measures convert patient medical record information into percentages and/or rates of performance, allowing consumers to compare providers within their state and across the nation. Outcome measures, on the other hand, reflect the results of care rather than focusing on specific treatments or interventions. Patient experience is also measured through a national, standardised survey of hospital patients about their inpatient experiences.
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Hospitals voluntarily submit data on treatments for specific conditions
The data submitted by hospitals is used to compare the performance of healthcare providers with other providers in the same state and across the nation. The quality of care is assessed through process and outcome measures. Process measures indicate whether a healthcare provider gives recommended care based on guidelines, standards of care, or practice parameters. Outcome measures reflect the results of care rather than whether a specific treatment or intervention was performed. Patient experience is also taken into account through a standardized survey of hospital patients about their experiences during their inpatient stay.
The Hospital Compare website provides information on treatments for conditions such as heart attack, heart failure, pneumonia, and surgery. The website displays star ratings for hospitals, summarizing their performance across various measures. These ratings are calculated using linear-mean scores and top-box scores from the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) Survey. HCAHPS measures patient perspectives on hospital care, and hospitals with at least 100 completed surveys in a 12-month period are eligible for these ratings.
The Centers for Medicare and Medicaid Services (CMS) work collaboratively with hospitals to ensure the public reporting of hospital quality performance information. The CMS provides nationwide hospital ratings that may influence reimbursement rates. However, these ratings do not always account for the social risk of communities, which may inadvertently affect hospitals serving disadvantaged areas. Most of the hospitals included in the CMS data are short-term acute care hospitals that are Medicare-certified.
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Hospital Compare uses patient surveys to measure experiences and perspectives
Hospital Compare is a website that displays the quality of care provided by hospitals. It is based on data from the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) Survey, which is a standardised survey instrument that measures patients' perspectives on hospital care. The survey covers aspects of care such as cardiovascular, emergency department care, infections, medical imaging, patient safety, and preventive care, among others. The data is then used to create a single, consumer-friendly composite score that is presented as a letter grade or a 1 to 5-star rating.
The HCAHPS initiative provides a standardised methodology for data collection, allowing for the comparison of hospital performance across different providers and states. Hospitals voluntarily submit data from medical records about the treatments their patients receive for specific conditions. This includes information on whether they provide recommended care for patients with heart attack, heart failure, pneumonia, or those undergoing surgery.
By participating in the Hospital Inpatient Quality Reporting (IQR) Program and the Hospital Outpatient Reporting (OQR) Program, hospitals can avoid reductions in their Medicare fee-for-service payment rates. The OQR Program was mandated by the Tax Relief and Health Care Act of 2006. The data submitted by hospitals is made publicly available on Care Compare on Medicare.gov and the Provider Data Catalog on data.cms.gov, allowing consumers, healthcare providers, and researchers to access and compare hospital performance.
It is important to note that Hospital Compare only includes data from Medicare-certified hospitals, and the ratings do not account for the social risk of communities. As a result, hospitals serving disadvantaged communities may be inadvertently penalised. Additionally, the absence of clinical data and patient health characteristics can impact the accuracy of risk adjustment calculations. Despite these limitations, Hospital Compare provides valuable insights into hospital quality and patient experiences, empowering patients and their loved ones to make informed decisions about their healthcare choices.
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Ratings do not account for the social risk of communities and may penalize disadvantaged hospitals
Hospital Compare is a consumer-oriented website that provides information on how well hospitals provide care to their patients. The website displays the Survey of Patients' Hospital Experiences, which uses data collected from the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) Survey. The HCAHPS initiative aims to standardize the survey instrument and data collection methodology to measure patients' perspectives on hospital care. Hospitals voluntarily submit data from medical records about the treatments their patients receive for specific conditions. This allows consumers to compare the performance of healthcare providers and make informed decisions about their health care.
However, one concern with the Hospital Compare ratings is that they do not account for the social risk of the communities served by the hospitals. The Centers for Medicare and Medicaid Services (CMS) provide nationwide hospital ratings that may influence reimbursement rates. While CMS metrics include some risk adjustment for the severity of illness, the ratings do not consider the social risk factors of the communities. This may inadvertently penalize hospitals that serve disadvantaged populations.
The impact of risk adjustment on hospital ratings and reimbursements is complex and not fully transparent. Previous studies have attempted to examine the effect of risk adjustment on quality ratings. For example, the 2017 Medicare Hospital Compare dataset groups various quality metrics into summary scores, which are then converted into a categorical 1 to 5-star rating. However, not all hospitals were included in the analysis due to missing quality group scores. Additionally, clinical data and patient health characteristics are often not available for risk adjustment calculations, which are tied to patient outcomes.
The financial implications of hospital ratings and the subsequent impact on reimbursement contracts are challenging to analyze due to a lack of transparency. As a result, hospitals serving disadvantaged communities may be inadvertently penalized in the rating system, which could have financial consequences. This highlights the need for a more comprehensive consideration of social risk factors and their impact on hospital performance and reimbursement.
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Hospital Compare displays outcome measures, reflecting the results of care
Hospital Compare, a web-based platform, was established through the collaborative efforts of Medicare and the Hospital Quality Alliance (HQA) in December 2002. The primary objective of Hospital Compare is to enhance transparency in hospital quality of care, enabling consumers to make well-informed healthcare decisions and driving improvements in US hospitals. The platform achieves this by publicly reporting data on various hospital quality measures.
One of the key features of Hospital Compare is its ability to display outcome measures, which provide valuable insights into the results of patient care. Outcome measures reflect the impact of healthcare interventions on patients' health status, focusing on the outcomes rather than the specific treatments administered. These measures are crucial for assessing the quality and performance of healthcare organizations.
Hospital Compare includes a wide range of outcome measures, such as mortality rates, readmission rates, patient experience, safety of care, and patient-reported outcome measures (PROMs). For instance, the percentage of patients who pass away due to surgery (surgical mortality rates) or the rate of surgical complications are considered outcome measures. Additionally, Hospital Compare incorporates data from specific hospital types, including Acute Care Hospitals, Acute Care Veterans' Hospitals, Department of Defense Hospitals, Critical Access Hospitals, and Children's Hospitals.
By presenting outcome measures, Hospital Compare empowers consumers to compare hospitals based on the results of care. This information helps patients and their families make informed choices about their healthcare options, selecting hospitals with proven track records in delivering successful patient outcomes. Moreover, healthcare providers can utilize Hospital Compare to identify areas for improvement, implement evidence-based practices, and enhance the overall quality of care they provide.
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Frequently asked questions
Hospital Compare only includes data from Medicare-certified hospitals. Most of these are short-term acute care hospitals.
Hospital Compare provides quality measure information on process and outcome measures. Process measures show whether a health care provider gives recommended care based on guidelines, standards of care, or practice parameters. Outcome measures reflect the results of care rather than whether or not a specific treatment was performed.
Hospital Compare uses data collected from the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) Survey, which is a national, standardized survey of hospital patients about their experiences during a hospital stay.
Hospital Compare groups quality metrics into quality group scores that are used to create an overall summary score. A categorical 1 to 5-star rating is calculated from the summary scores.
Hospital ratings may influence reimbursement from Medicare and Medicaid Services. Hospitals that do not participate or meet certain requirements will receive a reduction in their Medicare fee-for-service payment rate.






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