Maryland Code, Insurance § 15-906

(b)(1) For benefits designed to cover deductibles or coinsurance amounts under Medicare, a Medicare supplement policy shall provide for an automatic change in those benefits to coincide with changes in applicable Medicare deductible and copayment provisions.

(2) Subject to approval by the Commissioner, a carrier may reserve the right in a Medicare supplement policy to change premiums to correspond with changes in benefits under paragraph (1) of this subsection.

(d)(1) Unless otherwise expressly authorized under this article or a regulation adopted by the Commissioner under this article, coverage under a Medicare supplement policy may not be subject to any exclusion, limitation, or reduction that is inconsistent with the exclusions, limitations, or reductions under Medicare.

(2) To the extent a benefit is available to the insured under Medicare, a Medicare supplement policy shall provide that coverage for the benefit is not duplicated.

(f)(1) A Medicare supplement policy, contract, or certificate in force in the State may not provide benefits that duplicate benefits provided by Medicare.

(2) Unless approved by the Commissioner, a Medicare supplement policy may not be offered at an introductory premium rate.