Does anyone have a chemo cheatsheet? I have a question about concurrent treatment. total time(2.25 hours)

Mag sulfate – 2 gm (non-chemo) 96368
Potassium chloride – 20 meq (non-chem) 96368
Cisplatin – 70 mg (chemo) 96413,96415

My coworker wouldn’t or couldn’t explain why these codes would be correct. So I am lost.

Thank you for any assistance.