L — Length of Stay (days in hospital for this admission)

A — Acuity of Admission

Non-emergent (elective, scheduled, or non-urgent admission)+0Emergent (admitted via ED, or urgent unscheduled admission)+3

C — Charlson Comorbidity Index (CCI)

CCI = 0 (no major comorbidities)+0CCI = 1 (e.g., mild COPD, diabetes without end-organ damage, mild liver disease)+1CCI = 2 (e.g., moderate COPD, CHF, solid tumor without metastasis, hemiplegia)+2CCI = 3 (e.g., moderate liver disease, DM with end-organ damage, connective tissue disease)+3CCI = 4 (e.g., severe liver disease, renal disease, metastatic solid tumor)+4CCI ≥ 5 (e.g., AIDS/HIV, metastatic solid tumor + another major comorbidity)+5

E — Emergency Department Visits in the Past 6 Months (not including this admission)

LACE Index for Readmission

LACE Index for Readmission