Grade Physical Status 0 Mobility is completely normal and does not differ in any way from that before the onset of the disease. 1 Able to walk freely and perform light physical activities, including general housework or office work, but unable to perform heavier physical activities. 2 Able to walk freely and take care of himself/herself, but has lost the ability to work, and can get up and move around at least half of the time during the day. 3 Only partially able to take care of himself/herself, bedridden or wheelchair-bound for more than half of the day 4 Bedridden, unable to take care of himself/herself 5 Death