Calculate revenue-method adjusted patient days and cost per adjusted patient day from same-period facility inputs.
Methodology note: Adjusted patient days use the patient-revenue ratio method: inpatient patient days × total patient revenue ÷ inpatient patient revenue. Keep all inputs within the same facility scope and reporting period.
Cost Per Adjusted Patient Day Formula
This calculator uses the hospital revenue method for adjusted patient days:
Adjusted patient days = inpatient patient days × (total patient revenue ÷ inpatient patient revenue).
Because total patient revenue equals inpatient plus outpatient patient revenue, the same relationship can be written as inpatient patient days × [1 + (outpatient patient revenue ÷ inpatient patient revenue)].
Cost per adjusted patient day = entered cost numerator ÷ adjusted patient days.
Required Reporting Consistency
All four inputs must use the same organization or facility scope and the same reporting period. Patient revenue is not the same as cash collections. Use the revenue categories required by the applicable accounting or cost-reporting method. The entered cost numerator should be identified explicitly and kept consistent across comparisons.
Example
If inpatient patient days are 10,000, inpatient patient revenue is 40 million, and outpatient patient revenue is 20 million, adjusted patient days equal 15,000. A cost numerator of 12 million produces 800 cost units per adjusted patient day.
Administrative-use limitation: This calculator does not determine reimbursement, accounting treatment, or financial performance. Confirm definitions against the reporting framework used by your organization.
