Cost-share. The amount of money for which the beneficiary (or sponsor) is responsible in connection with otherwise covered inpatient and outpatient services (other than the annual fiscal year deductible or disallowed amounts) as set forth in 199.4 and 199.5(b) of this part. Cost-sharing may also be referred to as co-payment.
32 CFR § 199.2
General. In an effort to be as specific as possible as to the word and intent of CHAMPUS, the following definitions have been developed. While many of the definitions are general and some assign meaning to relatively common terms within the health insurance environment, others are applicable only to CHAMPUS; however, they all appear in this part solely for the purpose of the Program. Except when otherwise specified, the definitions in this section apply generally throughout this part.