This case-insensitive code system http://hl7.org/fhir/us/carin-rtpbc/CodeSystem/rtpbc-patient-pay-type defines the following codes:

Code	Display	Definition
deductible	Deductible	Amount to be collected from a patient to be applied to a periodic deductible
coinsurance	Per prescription coinsurance	Amount to be collected from a patient to satisfy a per prescription coinsurance
copay	Copay	Amount to be collected from the patient to satisfy a per prescription copay
tax	Tax	Amount to be collected from the patient for sales tax
cash-price	Full product cash price	Full product cash price before discounts or coupons
coupon-discount	Coupon discount amount	Coupon discount reducing the amount to be collected from the patient
member-discount	Member discount amount	Member discount reducing the amount to be collected from the patient
other-discount	Other discount amount	Other discount reducing the amount to be collected from the patient
other-cost	Other cost	Other amount to be collected from the patient
eligible	Eligible amount	Amount that is considered for adjudication
total	Total patient responsibility	Amount equalling the total patient responsibility for a prescription product's cost