"Policyholder" signs a contract with a health insurance company and thus, owns the health insurance policy.
A policyholder refers to a person who owns and claims a protection or insurance arrangement and has the privilege to practice all benefits under the agreement of protection, aside from where limited by the privileges of an appointee. A policyholder could conceivably be the safeguarded, or the sole or one of the recipients of the policy. Likewise called policyowner.