Appendix—Description of Functional Ambulation Category (FAC)
FAC   Ambulation           Definition
      Description
0     Nonfunctional       Subject cannot ambulate, ambulates in parallel bars only, or
      ambulation          requires supervision or physical assistance from more than
                          one person to ambulate safely outside of parallel bars
1     Ambulator-          Subject requires manual contacts of no more than one
      Dependent for       person during ambulation on level surfaces to prevent
      Physical            falling. Manual contacts are continuous and necessary to
      Assistance Level II support body weight as well as maintain balance and/or
                          assist coordination
2     Ambulator-          Subject requires manual contact of no more than one person
      Dependent for       during ambulation on level surfaces to prevent falling.
      Physical            Manual contact consists of continuous or intermittent light
      Assistance Level I touch to assist balance or coordination
3     Ambulator-           Subject can physically ambulate on level surfaces without
      Dependent for        manual contact of another person but for safety requires
      Supervision          standby guarding on no more than one person because of
                           poor judgment, questionable cardiac status, or the need for
                           verbal cuing to complete the task.
4     Ambulator-           Subject can ambulate independently on level surfaces but
      Independent Level    requires supervision or physical assistance to negotiate any
      Surfaces only        of the following: stairs, inclines, or non-level surfaces.
5     Ambulator-           Subject can ambulate independently on nonlevel and level
      Independent          surfaces, stairs, and inclines.