With home visits, when a provider is billing Cpt 99348 for the F2F, the POS is 12, however they then before that F2F perform 60 mins of extensive record review non F2F in their office, would Cpt 99358 have a different POS? I have read the prolong visit guideline but could not find or may have missed the guidance on assigning the POS for prolong service codes. Any advice would be greatly appreciated. Thank you