Final answer:
The health care coverage for TRICARE beneficiaries through an employer, association, or private insurer is referred to as Other Health Insurance (OHI).
Step-by-step explanation:
The health care coverage for TRICARE beneficiaries through an employer, association, or private insurer is referred to as Other Health Insurance (OHI). Private insurance can be categorized into employment-based insurance and direct-purchase insurance. Employment-based insurance is provided by an employer or union, while direct purchase insurance is coverage purchased directly from a private company.