<p>The hospital readmission rate PUF presents nation-wide information about inpatient hospital stays that occurred within
30 days of a previous inpatient hospital stay (readmissions) for Medicare fee-for-service beneficiaries. The readmission rate
equals the number of inpatient hospital stays classified as readmissions divided by the number of index stays for a given
month. Index stays include all inpatient hospital stays except those where the primary diagnosis was cancer treatment or rehabilitation.
Readmissions include stays where a beneficiary was admitted as an inpatient within 30 days of the discharge date following
a previous index stay, except cases where a stay is considered always planned or potentially planned. Planned readmissions
include admissions for organ transplant surgery, maintenance chemotherapy-immunotherapy, and rehabilitation.</p>