Texas Insurance Code - INS § 1201.053. Persons Insured

(a) Except as provided by this section, an individual accident and health insurance policy may not insure more than one individual.

(b) On the application of an adult member of a family, an individual accident and health insurance policy may, at the time of original issuance or by subsequent amendment, insure two or more eligible members of the adult's family, including a spouse, unmarried children younger than 25 years of age, including a grandchild of the adult as described by Section 1201.062(a)(1), a child the adult is required to insure under a medical support order or dental support order, if the policy provides dental coverage, issued under Chapter 154, Family Code, or enforceable by a court in this state, and any other individual dependent on the adult.

(c) The adult who applies for the individual accident and health insurance policy is considered the policyholder.