Hospital-level, 30-day risk-standardised readmission rate for patients discharged from the hospital after an admission for any eligible condition. The index admission is the eligible hospitalisation to which the readmission outcome is attributed.

30-day, all-cause readmissions - dichotomous yes or no outcome of whether each admitted patient has an unplanned readmission within 30 days. If a patient has more than one unplanned admission (for any reason) within 30 days after discharge from the index admission, only the first one is counted as a readmission.

Admissions that meet all of the following criteria: aged 65 or over; discharged alive; and not transferred to another acute care facility.

Index admissions for patients: 1. Admitted to a PPS-exempt cancer hospital; 2. Without at least 30 days of post-discharge enrolment in Medicare fee-for-service (in the case of patients who are not VA beneficiaries); 3. Admitted for primary psychiatric diagnosis; 4. Admitted for rehabilitation; 5. Admitted for medical treatment of cancer; 6. Discharged against medical advice; 7. With a principal diagnosis code of COVID-19 or with a secondary diagnosis code of COVID-19 coded as present on admission on the index admission claim.

Adjusted both for case mix differences (clinical status of the patient, accounted for by adjusting for comorbidities) and service mix differences (the types of conditions/procedures cared for by the hospital, accounted for by adjusting for the discharge condition category).

Medicare administrative claims and enrolment information.

Hospital Inpatient Quality Reporting Program (CMS and Providers) CMS Provider Compare and CMS Care Compare - Hospitals (Publicly reported) Contributes to Overall Hospital Star Quality Rating.

data.cms.gov/provider-data/topics/hospitals/measures-and-current-data-collection-periods cmit.cms.gov/cmit/#/MeasureView/?variantId=1862&sectionNumber=1 data.cms.gov/provider-data/topics/hospitals/overall-hospital-quality-star-rating

www.cms.gov/medicare/quality/initiatives/hospital-quality-initiative/measure-methodology