The answer to whether or not the child would qualify for a Make A Wish trip would be 'it depends'.
MAW says they grant wishes to "children with life-threatening medical conditions" without really defining what "life-threatening medical conditions" means other than "i.e., a progressive, degenerative or malignant condition that has placed the childs life in jeopardy."
I believe they are using this definition of malignant:
"very dangerous or harmful in influence or effect."
MAW website link to eligibility information.
"Who is eligible?
A child with a life-threatening medical condition who has reached the age of 2 1/2 and is under the age of 18 at the time of referral, is potentially eligible for a wish.
After a child is referred to the Make-A-Wish Foundation®, the Foundation will contact the child's treating physician to determine whether the child is medically eligible for a wish, based on the medical criteria established by the Make-A-Wish Foundation of America. In addition, a child cannot have received a wish from another wish-granting organization."
So, the child's physician has a big part in determining whether or not a child qualifies for MAW. I do know that some children with diabetes have been granted wishes in the past. With treatment, diabetes can be a fairly uncomplicated chronic illness, but even with good treatment, it can also be deadly. One low blood sugar can be deadly if not recognized right away. For some children, good control can be hard to achieve at first and they may qualify for MAW for that reason.
You may want to look into an organization called
Dream Factory (the link says the organization is offline right now). Try doing an internet search for "Dream Factory" + whatever state they are in to see if you can find a local chapter. Their criteria includes that the child is between 3 and 18 years old and has been diagnosed with a critical or chronic illness.