overstated days supply or null

Examples below, issue discovered while summing during a 12 month observation period prior to surgery

OrderID / MedicationNM / CalculatedDaysSupplyNBR

338843047 / CODEINE 10 MG-GUAIFENESIN 100 MG/5 ML ORAL LIQUID / 800

371344380 / HYDROCODONE 10 MG-CHLORPHENIRAMINE 8 MG/5 ML ORAL SUSP EXTEND.REL 12HR / 473

352715415 / OXYCODONE 5 MG/5 ML ORAL SOLUTION / 84

394791007 / PROMETHAZINE 6.25 MG-CODEINE 10 MG/5 ML SYRUP / 50

348600914 / FENTANYL 100 MCG BUCCAL TABLET, EFFERVESCENT / NULL

387314511 / FENTANYL 50 MCG/HR TRANSDERMAL PATCH / NULL