Final answer:
To increase the CMI for Memorial Hospital, adding volume to MS-DRG with CMI 1.5 would raise the average CMI since 1.5 is higher than the current hospital CMI of 1.245.
Step-by-step explanation:
The subject of this question is Health, specifically related to hospital case management in terms of the Case-Mix Index (CMI). The CMI represents the average diagnosis-related group (DRG) relative weight per patient case and demonstrates the complexity and resource requirements of the hospital's patient population.
To increase the CMI of Memorial Hospital, which is currently 1.245, the volume of cases in an MS-DRG with a higher CMI than 1.245 would need to increase. Therefore, the correct answer is: b) MS-DRG with CMI 1.5. By adding more cases to a DRG with a CMI of 1.5, it raises the average CMI of the hospital, indicating that the hospital is treating a more complex or resource-intensive case mix.