According to my info his sperm count would probrably be conciderd normal if his ejaculate contains more than 20 million sperm per millimeter and if the total number of sperm is at least 40 - 50 million. The percentage of those sperm that are of normal morphology and motility is a major factor but this does vary greatly.
Doing research the main two questions to ask your doctor tomorrow are 1) Is his sperm count concidered as normal, low or infertile?
2) How did the lab reach this conclusion?
Hope this helps and you get the information you require tomorrow.
Good luck