Dental benefit contracts may contain the following provisions:
"Notwithstanding any limiting age stated in the contract, any unmarried child covered under the contract as a dependent of an enrollee who is chiefly dependent for support upon the enrollee, and who, at the time of reaching the limiting age, is incapable of self-support because of mental or physical incapacity that commenced prior to the child's attaining the limiting age, shall continue to be covered under the contract while remaining so dependent, unmarried, and mentally or physically incapacitated, until the coverage on the enrollee upon whom the child is dependent terminates."
Va. Code § 38.2-6106