Expanded Disability Status Scale (EDSS)

0   - Normal neurological exam (all Functional Systems [FS] grade 0)
1.0 - No disability, minimal signs in one FS (one FS grade 1)
1.5 - No disability, minimal signs in more than one FS (more than one FS grade 1)
2.0 - Minimal disability in one FS (one FS grade 2, others 0 or 1)
2.5 - Minimal disability in two FS (two FS grades 2, others 0 or 1)
3.0 - Moderate disability in one FS (one FS grade 3, others 0 or 1) though fully ambulatory;
or mild disability in three or four FS (three/four FS grades 2, others 0 or 1) though fully ambulatory
3.5 - Fully ambulatory but with moderate disability in one FS (one FS grade 3) and mild disability in one or two FS (one/two FS grade 2) and others 0 or 1;
or fully ambulatory with two FS grades 3 (others 0 or 1);
or fully ambulatory with five FS grades 2 (others 0 or 1)
4.0 - Unable to walk > 25 feet without aid
4.5 - Unable to walk > 100 feet without aid
5.0 - Relies on a walking aid; unable to walk > 300 feet without resting
5.5 - Relies on a walking aid; unable to walk > 200 feet without resting
6.0 - Unable to walk more than 50 feet with or without aid; cannot stand unaided for five minutes
6.5 - Unable to walk more than 10 feet with or without aid; cannot stand unaided for two minutes
7.0 - Unable to walk 5 meters even with aid, essentially restricted to wheelchair; wheels self and transfers alone; up and about in wheelchair some 12 hours a day
7.5 - Unable to take more than a few steps; restricted to wheelchair; may need some help in transferring and in wheeling self
8.0 - Essentially restricted to bed or chair or perambulated in wheelchair, but out of bed most of the day; retains many self-care functions; generally has effective use of arms
8.5 - Essentially restricted to bed much of the day; has some effective use of arm(s); retains some self-care functions
9.0 - Helpless bed patient; can communicate and eat
9.5 - Totally helpless bed patient; unable to communicate effectively or eat/swallow
10  - Death due to MS