One difference between Intensive Case Management $($ICM$)$ and Assertive Case Management $($ACM$)$ is:

ACM employs an interdisciplinary team approach, whereas ICM does not.

ACM is not cost$-$effective, whereas ICM is cost$-$effective.

ACM employs a long$-$term management plan, whereas ICM is a short$-$term program.

ACM clients result in longer hospital admissions, whereas ICM clients end up with shorter hospital admissions.