Table 1.

Functional Performance Criteria^* for Rating Individual FIM Instrument items.

Rating	Performance Criteria	Category
7	Complete independence (timely, safely)	High
6	Modified independence (device)
5	Supervision (subject = 100%)	Medium
4	Minimal assistance (subject ≥ 75%
3	Moderate assistance (subject ≥ 50%)	Low
2	Maximal assistance (subject ≥ 25%)
1	Total assistance (subject < 25%)

^*Adapted from the Inpatient Rehabilitation Facility-Patient Assessment Instrument (IRF-PAI) available on Centers for Medicare and Medicaid Services website: https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/InpatientRehabFacPPS/IRFPAI.html

Dashed lines indicate thresholds we used in creating broader categories (low, mid, high) of functional independence to facilitate interpretation and discussion of clinically meaningful transitions.