{"10":"X-ray evidence of involvement of 2 or more major joints or 2 or more minor joint groups, with occasional incapacitating exacerbations.","20":"X-ray evidence of involvement of 2 or more major joints or 2 or more minor joint groups, with occasional incapacitating exacerbations. Note: Rate on limitation of motion of affected joint if compensable; otherwise 10% per joint group with X-ray evidence."}