SDCL § 58-17A-15: Sale of second policy prohibited except as replacement--Liability of issuer.

No issuer or insurance producer may sell a medicare supplement policy to a person who has an existing, in force medicare supplement policy unless the issuer or insurance producer is replacing the existing coverage. However, no issuer is liable beyond a refund of premium for the duplication of such medicare supplement coverage when a statement, signed by the insured, is obtained from the insured verifying that no other medicare supplement coverage is then in effect.