The POS option applies under TRICARE
Prime only. It gives TRICARE Prime enrollees the freedom to obtain
services from any civilian provider. Under the POS option, when
TRICARE Prime enrollees self-refer to a civilian authorized provider
other than their Primary Care Manager (PCM) or for dates of service
on or after January 1, 2018, all requirements applicable to health
benefits under the CHAMPUS Basic Program (
32 CFR 199.4) shall apply, unless otherwise
stated in this section.