TRICARE Prime is a managed care health plan available to eligible members of the U.S. military and their families. It offers comprehensive coverage, including preventive care, hospitalization, and specialty services, with minimal out-of-pocket costs. Members must choose a primary care manager (PCM) to coordinate their healthcare needs. To enroll in TRICARE Prime, beneficiaries must live in a designated service area and may need to pay an annual enrollment fee. The plan emphasizes using military treatment facilities (MTFs) for care, but members can also access civilian providers if referred by their PCM.