Blanket health insurance is declared to be that form of health insurance covering groups of persons as enumerated in one of the following subdivisions:

(1) under a policy or contract issued to a common carrier or to an operator, owner, or lessee of a means of transportation, who or which shall be considered the policyholder, covering a group of persons who may become passengers defined by reference to their travel status on the common carrier or the means of transportation;

(2) under a policy or contract issued to an employer, who shall be considered the policyholder, covering a group of employees, dependents, or guests, defined by reference to specified hazards incident to an activity or activities or operations of the policyholder;

(3) under a policy or contract issued to a college, school, or other institution of learning, a school district or districts, or school jurisdictional unit, or to the head, principal, or governing board of an educational unit, who or which shall be considered the policyholder covering students, teachers, or employees;

(4) under a policy or contract issued to a religious, charitable, recreational, educational, or civic organization, or branch of them, which shall be considered the policyholder, covering a group of members or participants defined by reference to specified hazards incident to an activity or activities or operations sponsored or supervised by the policyholder;

(5) under a policy or contract issued to a sports team, camp, or sponsor of them, which shall be considered the policyholder, covering members, campers, employees, officials, or supervisors;

(6) under a policy or contract issued to a volunteer fire department, first aid, civil defense, or other volunteer organization, which shall be considered the policyholder, covering a group of members or participants defined by reference to specified hazards incident to an activity or activities or operations sponsored or supervised by the policyholder;

(7) under a policy or contract issued to a newspaper or other publisher, which shall be considered the policyholder, covering its carriers;

(8) under a policy or contract issued to an association, including a labor union, that has a constitution and bylaws and that has been organized and is maintained in good faith for purposes other than that of obtaining insurance, which shall be considered the policyholder, covering a group of members or participants defined by reference to specified hazards incident to an activity or activities or operations sponsored or supervised by the policyholder;

(9) under a policy or contract issued to cover any other risk or class of risks that, in the discretion of the director, may be properly eligible for blanket accident and sickness insurance; the discretion of the director may be exercised on an individual risk basis or class of risks, or both.