Disability..??

Hey All, Got a quick...well question...I am in the process of applying for disability. Does anyone happen to know the weight/height paremeters that are "exceptable" When i made my appt on the phone they only asked what the disability was, I said morbidly obese and diabetes ( i prolly could have gone on all day... hahah) I know that the process is long and time consuming, and believe me I don't want to depend on it, but i lowered my hours at work and it still a problem.. i am in such much pain at the end of the day no to mention I hardly get a descent nights rest (sleep apnea, not technically diagnosed, sleep study already scheuled). Anyhow thanx for listening, any and all info appreciated. Christina