59855 is more correct. If you have pre-natal care you will bill those out separate(not a global delivery)
if it's a known fetal demise, you can not bill an induced abortion code. Since she is 20 weeks, you can bill a delivery code. I typically bill delivery with postpartum care only and then the prenatal visits. Because usually at 20 weeks there has only been maybe 3 or 4 visits.
My understanding is that for less than 20 weeks, you can not bill delivery code, only hospital visit