Under outpatient prospective payment system, Medicare decides how much a hospital or a community health center will be reimbursed for each service rendered. Depending on the service, the patient pays either a coinsurance amount (20%) or a fixed copayment amount, whichever is less. Mr. Smith, who has paid his deductible for the year, was charged $85 for a minor procedure performed in the hospital outpatient department. The fixed copayment amount for this type of procedure, adjusted for wages in the geographic area, is $15. What would Mr. Smith need to pay in this case?