Estimates days spent in acute care (i.e., time spent in emergency department, unplanned readmission and observation stays) within 30 days of discharge from an inpatient hospitalisation for Acute Myocardial Infarction.

A count of the number of days the patient spends in acute care within 30 days of discharge from an eligible index Acute Myocardial Infarction hospitalisation (i.e. days spent in an ED, admitted to an observation unit, or admitted as an unplanned readmission for any cause to a short-term acute care hospital). Each Emergency Department treat-and-release visit = 0.5 days. Observation stays are rounded up to the nearest half-day. Each readmission day is counted as one full day (1 day).

Admissions for patients that meet all of the following inclusion criteria: 1. Discharged from the hospital with a principal discharge diagnosis of AMI 2. Aged 65 or over 3. Discharged alive 4. Not transferred to another acute care facility.

Index admissions that are: Same-day discharges; AMI admissions within 30 days of discharge from a prior AMI index admission; Discharged against medical advice. principal/secondary diagnosis code of COVID-19 coded as present on admission on the index admission claim.

Age (years above 65); Male; location of MI (anterior or other); history of coronary artery bypass graft (CABG) surgery; history of percutaneous transluminal coronary angioplasty (PTCA), comorbidities (Condition Categories) to adjust for case-mix differences among hospitals based on the clinical status of the patient at the time of the index admission.

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.

Wadhera RK, Joynt Maddox KE, Desai NR, Landon BE, Md MV, Gilstrap LG, Shen C, Yeh RW. Evaluation of Hospital Performance Using the Excess Days in Acute Care Measure in the Hospital Readmissions Reduction Program. Ann Intern Med. 2021 Jan;174(1):86-92. doi: 10.7326/M20-3486. Epub 2020 Oct 13. PMID: 33045180; PMCID: PMC8165741. cmit.cms.gov/cmit/#/MeasureView/?variantId=1871&sectionNumber=1 data.cms.gov/provider-data/topics/hospitals/measures-and-current-data-collection-periods data.cms.gov/provider-data/topics/hospitals/overall-hospital-quality-star-rating

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