Reason for Service Code
T-MSIS Analytic Files (TAF) Claims Research Identifiable Files (RIFs), CCW Codebook, V1, November 2019

AD = Additional Drug Needed 
AN = Prescription Authentication 
AR = Adverse Drug Reaction 
AT = Additive Toxicity 
CD = Chronic Disease Management 
CH = Call Help Desk 
CS = Patient Complaint/Symptom 
DA = Drug-Allergy 
DC = Drug-Disease (Inferred) 
DD = Drug-Drug Interaction 
DF = Drug-Food interaction 
DI = Drug Incompatibility 
DL = Drug-Lab Conflict 
DM = Apparent Drug Misuse 
DS = Tobacco Use 
ED = Patient Education/Instruction 
ER = Overuse 
EX = Excessive Quantity
HD = High Dose 
IC = Iatrogenic Condition 
ID = Ingredient Duplication 
LD = Low Dose 
LK = Lock In Recipient
LR = Underuse 
MC = Drug-Disease (Reported)
MN = Insufficient Duration 
MS = Missing Information/Clarification 
MX = Excessive Duration 
NA = Drug Not Available 
NF = Non-Formulary Drug 
NN = Unnecessary Drug 
NP = New Patient Processing 
NR = Lactation/Nursing Interaction 
NS = Insufficient Quantity 
OH = Alcohol Conflict 
PA = Drug-Age 
PC = Patient Question/Concern 
PG = Drug-Pregnancy 
PH = Preventive Health Care 
PN = Prescriber Consultation 
PP = Plan Protocol 
PR = Prior Adverse Reaction 
PS = Product Selection Opportunity 
RF = Health Provider Referral 
SC = Suboptimal Compliance 
SD = Suboptimal Drug/Indication 
SE = Side Effect
SF = Suboptimal Dosage Form 
SR = Suboptimal Regimen 
SX = Drug-Gender 
TD = Therapeutic 
TN = Laboratory Test Needed 
TP = Payer/Processor Question  
Null/missing = source value is missing or unknown