How we Calculate 30 Day Readmission Metrics
A readmission occurs when a patient is discharged from inpatient care and is then subsequently readmitted to inpatient care at the same or another hospital within 30 days of the initial discharge. This metric is measured irrespective of whether any other type of care was provided during this 30 day reference period.
This metric ONLY applies to Inpatient Facilities.
The equation for this metric is:
This metric relates two events, inpatient discharge and re-admission to inpatient care. As a result, we look for discharges during a 23 month period to allow a 30 day reference period in which a readmission could occur. In the image below you can see how these periods align. The end of the 24 month readmission period aligns with the end of the last reported quarter. As a result, this metric does not include discharges in the last month of the last quarter of the 2 year reporting period.
- This metric does not include discharges to another inpatient facility. That is, a transfer from one hospital to another is not calculated in this metric.
- This metric does not require any post-acute event during the 30 day reference period. That is, readmission is counted under either of the following.
|The following are included in the denominator||The following are excluded from the Numerator|
|For Discharge||For Readmission|
All facilities classified as
All facilities classified as:
Discharges with instructions to short term General Hospital for Inpatient Care (Discharge Status code 02) followed by inpatient admission within 1 day of D/C.
Despite the name in the row, this metric is a readmission metric, not a hospitalization metric. Readmission only applies to Inpatient Discharges, and this table only presents metrics connected to Inpatient discharges.
Comparing to CMS
CMS identifies a readmission as a "binary" event by answering the question, "Within 30 days of INP discharge, was the patient readmitted to a hospital?"
Trella Health counts the number of readmissions during that 30 day reference period.
Therefore, when multiple readmissions occur, we will count them in the numerator of the equation above. This means that the percentage could be higher as a result of multiple counts.
Where you will find this metric
This metric will only appear in the Home Health Solution on a facility detail page for an Inpatient Facility in the Key Stats Table.