Maryland Insurance Section 15-207

      Each policy of health insurance shall contain the following provision:

      "Entire contract; changes: This policy, including the endorsements and the attached papers, if any, constitutes the entire contract of insurance. No change in this policy shall be valid until approved by an executive officer of the insurer and unless such approval be endorsed hereon or attached hereto. No insurance producer has authority to change this policy or to waive any of its provisions."