If an EMT can monitor that fluid, then it's NOT an SCT billable item. If a Paramedic can monitor the fluid, then it's possibly billable as an ALS item. If a regular (non-CCT) Paramedic can't monitor it, then it probably is an SCT billable item. As a Paramedic in Sacramento, I can't monitor antibiotics, TPN, blood/blood products, most pressors, or IV NTG, for instance. I've never heard of an IV fluid simply because a pump was used/required.
It's also possible that SCT billing is very regional and based upon what EMT, EMT-II/Advanced EMT, and Paramedic personnel can do in that region. Since I don't do billing, that's my (somewhat) educated guess.