What does a score of 9 in EDSS signifies?

Expanded disability severity score (EDSS)is used as measure of neurological impairment in multiple sclerosis. EDSS score: 3.5 Ambulatory Walks normally, shows no disability 9 Bedridden Can talk, Can drink 9.5 Bedridden Can't talk ,Can't drink 10 Death due to MS Revised McDonald's criteria is used in diagnosis of multiple sclerosis.