Except for permitted preexisting condition clauses as described in Regulations .08B and .27B(2) of this chapter, a policy or certificate may not be advertised, solicited, or issued for delivery in this State as a Medicare supplement policy if the policy or certificate contains limitations or exclusions on coverage that are more restrictive than those of Medicare. A Medicare supplement policy or certificate may not use waivers to exclude, limit, or reduce coverage or benefits for specifically named or described preexisting diseases or physical conditions. A Medicare supplement policy or certificate in force in this State may not contain benefits which duplicate benefits provided by Medicare. Polices With Benefits for Outpatient Prescription Drugs. Subject to COMAR 31.10.05.07B(4) and (6)—(9), and Regulation .08B(5)—(10) of this chapter, a Medicare supplement policy with benefits for outpatient prescription drugs in existence before January 1, 2006, shall be renewed for current policyholders who do not enroll in Part D at the option of the policyholder. A Medicare supplement policy with benefits for outpatient prescription drugs may not be issued after December 31, 2005. After December 31, 2005, a Medicare supplement policy with benefits for outpatient prescription drugs may not be renewed after the policyholder enrolls in Medicare Part D unless: The policy is modified to eliminate outpatient prescription coverage for expenses of outpatient prescription drugs incurred after the effective date of the individual's coverage under a Part D plan; and Premiums are adjusted to reflect the elimination of outpatient prescription drug coverage at the time of Medicare Part D enrollment, accounting for any claims paid, if applicable.