Is it better to have a high or low CMI?

The financial department monitors case-mix index (CMI), and in an ideal world, the hospital’s CMI would be as high as possible. A high CMI means the hospital performs big-ticket services and therefore receives more money per patient.

What is the formula for Case Mix Index?

The Case Mix Index (CMI) is the average relative DRG weight of a hospital’s inpatient discharges, calculated by summing the Medicare Severity-Diagnosis Related Group (MS-DRG) weight for each discharge and dividing the total by the number of discharges.

How is CMI calculated example?

CMI is the sum of all DRG-relative weights divided by the number of patients for a specific period. The result is your hospital’s CMI for the calculation period. For example, if your hospital billed 35 DRGs for a one-month period and relative weights totaled 40, the CMI for one month is 0.875, or 35 divided by 40.

How do you read CMI?

CMI is calculated by adding the relative weights (as defined by DRGs) for all patient admissions and then dividing that number by the total number of admissions during the same time frame.

What is the definition of case mix index?

Case mix index (CMI) is a relative value assigned to a diagnosis-related group of patients in a medical care environment. The CMI value is used in determining the allocation of resources to care for and/or treat the patients in the group.

How is CMI calculated?

Calculate the CMI. CMI is the sum of all DRG-relative weights divided by the number of patients for a specific period. Most health care facilities calculate CMI both monthly and annually. List each DRG billed during the calculation period, as well as its corresponding weight.

What is CMS case mix?

Case Mix Index (CMI) is used by the Centers for Medicare and Medicaid Services (CMS) to determine funding allocation for Medicare and Medicaid beneficiaries in hospitals and other care facilities.

What is case mix analysis?

Case Mix Analysis is used to determine reimbursement, to describe a population being served and to identify differences in practice patterns or coding complexity. The case mix index is the average of the relative weights of all cases treated at a given facility. The theoretical average CMI is 1.000.