I'd guess s/he's talking about a coronary CT angiogram. This is a different scan from the calcium CT. It can tell you the rough percentage of blockage in each coronary artery. For example, I have a really high score, almost 600, and the coronary CT angiogram showed no blockages more than 50%. That's not optimal, but given the time it takes for the blockages to progress and the fact that they can be stopped in some cases, I'm in reasonable shape. I don't think they consider intervention until the blockages are 70% or more.

I'd guess that at your numbers, s/he really isn't concerned but thinks that maybe knowing the percentage would give you peace of mind. If the numbers you mentioned are overall CAC scores, they are low. A score less than 100 is in the lowest risk category. (https://my.clevelandclinic.org/health/diagnostics/16824-calcium-score-screening-heart-scan) outside of a score of zero. For some people, knowing might make it worse I suppose. You'd have to decide for yourself. Not all cardiologists offer a CT coronary angiogram (if that is what is being offered) unless you had symptoms, so yours is trying to put your mind at ease. (I would guess.)