I'm shooting from the hip with no notes in front of me, but over 10 years as RPh in LTC. The rules/regs in LTCF are always (in every state I've been licensed & worked) "up for interpretation," however, I interpret and we practiced:
C2 Rx comes in (Ex: 120 Oxy)
We dispense 50 (for whatever reason- insurance, not sufficient QTY- whatever)
We have 60 DAYS to "fill & dispense" remaining 70.
So, had the script just been written and put on hold and NONE dispensed - Rx valid for 1 year. This (I assume) is discussing how long to finish dispensing a partial.
Again- shooting from the hip!