S.D. Codified Laws § 58-17H-11

Any cost-sharing requirement other than a copayment or coinsurance requirement, such as a deductible or out-of-pocket maximum, may be imposed with respect to emergency services provided out-of-network if the cost-sharing requirement generally applies to out-of-network benefits. A deductible may be imposed with respect to out-of-network emergency services only as part of a deductible that generally applies to out-of-network benefits. If an out-of-pocket maximum generally applies to out-of-network benefits, that out-of-network maximum applies to out-of-network emergency services.