Ladybelle, if this helps, I have "The Complete Book of Food Counts" by Corinne T. Netzer, which lists "raw zucchini (with skin)," a 1/2 cup serving, chopped or sliced, as having 8-9 calories and 1.6 carbs (sliced) or 1.8 (chopped) carbs per 1/2 cup. "Boiled" zucchini, drained, is 14 calories and 3.5 carbs per 1/2 cup, whicle mashed is 19 calories and 4.7 carbs per 1/2 cup.

Since you know the situation in general with CAD, this may help you decide if zucchini is acceptable in the CM veggie category.

Best, Sona