In the post-acute continuum of care, Inpatient Rehabilitation Facilities (IRF) are a critical venue to provide specialized services to patients with functional deficits. Patients receiving inpatient rehabilitation usually require 5.5 direct nursing hours per patient per day with an average length of stay of 10-20 days. Inpatient rehabilitation facilities are paid under case mix groups (CMG’s) which are based on the resource intensity that would typically be associated with each patient’s clinical condition.
Inpatient rehabilitation providers are also restricted to treating a specific patient population. As one of the special types of hospital excluded from the Medicare Inpatient Prospective Payment System these facilities must admit at least 60% of their patients with certain conditions. Originally referred to as the 75% Rule, under current regulations the percentage has been frozen at 60%.