Chapter 8H. Specialty Drug Copayment Limitation. § 48–855.01. Definitions. § 48–855.02. Specialty drug copayment or coinsurance limitation. § 48–855.02a. Insulin copayment or coinsurance limitation. § 48–855.02b. Calculation of member's contributions for a prescription drug covered under the health benefit plan. § 48–855.03. Applicability.